How to Price Shopify Product Options by Size, Quantity, and Pricing Table With Appify Custom Product Options

Many Shopify product options are easy to price.

A text field may be free. A rush option may add $25. A premium finish may add $10.

But size-based and quantity-based products are different.

A custom product may need a price based on width, height, material, quantity, rate tables, setup fees, discounts, product data, shipping weight, and fulfillment rules.

Appify Custom Product Options helps Shopify merchants price product options by size, quantity, and pricing table. Merchants can collect customer inputs, use formulas, reference pricing tables, apply quantity discounts, calculate weight, and generate custom SKUs from the selected product configuration.

This is useful for products like stickers, labels, banners, signs, blinds, shades, flooring, packaging, foam cushions, fabric, CNC parts, 3D printing, and other made-to-order products.

How do I price Shopify product options by size?

Use measurement inputs and formulas.

For example, a merchant selling custom signs may need customers to enter width and height.

The price might be based on area:

width × height × material rate

That works well for products priced by square footage, square inches, linear footage, volume, or weight.

Examples include:

• Signs priced by width and height.
• Foam cushions priced by width, length, and thickness.
• Fabric priced by length.
• Flooring priced by area.
• 3D printing priced by volume and material.

In Appify Custom Product Options, the merchant can collect the customer’s measurements and use them inside pricing formulas.

For formula setup details, read: Formula Editor.

How do I price Shopify product options by quantity?

Use quantity discount rules.

Quantity pricing is useful when the unit price changes as the order gets larger.

For example:

This works for many custom products.

But size-based products often need more control.

A quantity discount for 500 small stickers may not make sense for 500 large stickers. A discount for small decals may not work for large signs.

Appify Custom Product Options supports quantity discount rules that can be based on quantity alone or quantity plus another numeric value.

That means discounts can respond to the real product configuration.

For setup details, read: Quantity Discount Rules.

How do I use pricing tables for Shopify product options?

Use pricing tables when your prices come from a rate sheet.

Many custom products do not use one simple formula.

They use tables like:

• Material to price per unit.
• Width and height to price.
• Quantity and size to discount.
• Product type and finish to rate.
• Weight bracket to handling cost.

Appify Custom Product Options lets merchants create pricing tables and reference them inside formulas.

A simple table lookup may use one value.

TABLE("materials", OPT_TOKEN("MATERIAL"))

That can look up a material rate based on the customer’s material choice.

A two-dimensional table can use two values.

TABLE("panel_prices", INPUT("WIDTH"), INPUT("HEIGHT"))

That can look up a price from a width and height grid.

This is useful for blinds, shades, panels, signs, sheets, packaging, flooring, and other products with rate-table pricing.

For setup details, read:

• Pricing Tables
• Using Tables in Formulas

Why should I use pricing tables instead of one huge formula?

Pricing tables keep pricing data separate from pricing logic.

That makes the calculator easier to maintain.

For example, a blinds merchant may have a vendor price sheet with width and drop prices.

A print shop may have material rates by square foot.

A packaging supplier may have price grids by size and quantity.

If all of that is hardcoded into one formula, every price update becomes risky.

With pricing tables, the merchant can update the table while keeping the formula easier to read.

This helps with:

• Vendor rate sheets.
• Material price lists.
• Size grids.
• Width and height pricing.
• Production rate cards.
• Shared rates across multiple calculators.

How do pricing variables help with complex Shopify pricing?

Pricing variables make formulas easier to manage.

Instead of writing one long formula, the merchant can split the calculation into smaller pieces.

For example:

Then the final formula can stay short.

VAR("AREA") * VAR("MATERIAL_RATE")

This is useful for merchants and agencies.

It makes the calculator easier to review, test, and update later.

For setup details, read: Pricing Variables.

Can I price Shopify product options by size and quantity at the same time?

Yes.

This is one of the most important cases for custom products.

A product may need both size-based pricing and quantity-based discounts.

For example, a sticker store may price by:

• Width.
• Height.
• Material.
• Finish.
• Quantity.

The calculator can first calculate the size-based price.

Then it can apply a quantity discount.

For more advanced products, a quantity discount can also depend on another value, such as area, width, or weight.

That helps prevent the wrong discount from being applied to a large custom item.

Can I use Shopify product or variant price in a formula?

Yes.

Some products should start with the selected Shopify product or variant price.

Then the calculator can add custom option pricing on top.

For example:

VAR("BASE_PRICE") + OPT("SIZE") + OPT("COLOR")

This approach is useful when the merchant already manages base prices in Shopify.

The app can use that starting price, then calculate the extra custom pricing from the selected options.

This helps avoid copying catalog prices into every calculator.

For setup details, read:

• Formula Editor
• Initial Price

How do fixed fees fit into size and quantity pricing?

Not every charge belongs inside the main formula.

Some charges should be separate.

Fixed fees are useful for:

• Artwork setup.
• Proofing.
• Rush processing.
• Handling.
• Cutting.
• Machine setup.
• Packaging.

For example, a print shop may price a sign by size and material.

It may also charge a $20 artwork setup fee.

Keeping that fee separate can make the price easier for the customer to understand.

For setup details, read: Fixed Fees.

How do price adjustments help with pricing exceptions?

Price adjustments help when a condition should change the running price.

For example:

• Add 15% when premium material is selected.
• Add $25 when rush production is selected.
• Add $50 when width is over 48 inches.
• Reduce the price when a simpler finish is selected.
• Add a handling charge for fragile materials.

This keeps the main formula cleaner.

Instead of putting every exception into one long formula, the merchant can create separate pricing rules.

For setup details, read: Price Adjustments.

Can I calculate shipping weight from Shopify product options?

Yes.

Some custom products change weight based on size, material, quantity, or selected components.

A fixed Shopify product weight may not be accurate.

Examples:

• A metal sign gets heavier as width and height increase.
• A foam cushion gets heavier as volume increases.
• A box order gets heavier when insert count increases.
• A furniture configuration gets heavier when modules are added.

Appify Custom Product Options supports formula-based weight calculation.

The merchant can use option inputs, pricing variables, and pricing tables to calculate product weight.

Example:

INPUT("WIDTH") * INPUT("HEIGHT") * 0.05

Another example:

TABLE("box_weights", OPT_TOKEN("SIZE")) + INPUT("INSERT_COUNT") * 0.1

This helps the configured product carry a more realistic weight into the order and shipping workflow.

For setup details, read: Weight Calculation.

Can I generate SKUs from Shopify product options?

Yes.

A normal Shopify SKU usually identifies the base product or variant.

But a custom product may need a SKU that includes the selected material, size, color, or dimensions.

For example:

BLD-{{MATERIAL}}-{{DIM1}}x{{DIM2}}

A blind order could generate:

BLD-WD-36x48

That gives the fulfillment team a compact production code.

Appify Custom Product Options lets merchants build custom SKU rules from option fragments and a composition template.

This is useful for production, fulfillment, warehouse teams, order exports, and configured B2B products.

For setup details, read: Custom SKU Rules.

What does the shopper see?

The shopper sees a guided product calculator.

They choose options. They enter measurements. They select quantity. They see the price update.

The calculator can show a price summary.

That helps the customer understand the total.

The final price may include:

• Base price.
• Size pricing.
• Material pricing.
• Add-ons.
• Setup fees.
• Rush fees.
• Quantity discounts.
• Pricing table lookups.

The shopper does not need to understand the formula.

They just need a clear price before checkout.

For setup details, read: Price Summary Display.

What products are a strong fit for size, quantity, and pricing table logic?

This pricing approach is useful when a product cannot be managed with a small number of fixed variants.

These products need more than simple fields.

They need pricing logic.

What is the difference between product options and a pricing calculator?

A basic product options app adds fields to the product page.

That may be enough for simple personalization.

A pricing calculator connects those fields to real pricing rules.

The benefit is not just more features.

The benefit is maintainable pricing.

Can AI help build Shopify product pricing formulas?

Yes.

Appify Custom Product Options includes AI-assisted formula tools.

A merchant can describe pricing logic in plain English.

For example:

Price is width times height times $3.50 per square foot, with a $50 minimum.

The AI formula tool can generate a starter formula.

The merchant can then review, test, and edit it.

This is useful when the merchant knows the pricing rule but does not want to build every formula from scratch.

Example workflow: custom sticker pricing

A sticker store needs custom size, material, finish, and quantity pricing.

The merchant can use:

• Width and height inputs.
• A pricing variable for area.
• A pricing table for material rates.
• A quantity discount rule.
• A setup fee.
• A price summary.

The shopper enters the size, chooses the material, selects the quantity, and sees the price.

Example workflow: blind and shade pricing

A blinds store needs width and drop pricing.

The merchant can use:

• Width and drop inputs.
• A two-dimensional pricing table.
• Material choice tokens.
• Optional valance pricing.
• Formula-based shipping weight.
• Custom SKU rules.

The shopper chooses dimensions and options.

The calculator looks up the right price and generates useful order data.

Example workflow: custom packaging pricing

A packaging store needs dimensions, board type, print coverage, and quantity tiers.

The merchant can use:

• Dimension inputs.
• Pricing tables.
• Fixed die or setup fees.
• Quantity discounts.
• Price adjustments for rush work.
• Weight calculation for shipping.

The shopper gets a price without waiting for a manual quote.

How should I plan a size-based product pricing calculator?

Start with the business rules.

Do not start with the formula.

Ask these questions first:

• What does the customer need to choose?
• Which choices affect price?
• Which inputs are measurements?
• Which rates come from a pricing table?
• Which values should become reusable variables?
• Which charges should be fixed fees?
• Which discounts depend on quantity?
• Do discounts also depend on size, area, or weight?
• Does shipping weight change by configuration?
• Does fulfillment need a generated SKU?
• Should the customer see a price summary?

Once those answers are clear, the calculator becomes easier to build.

FAQ

How do I price Shopify product options by size?

Use measurement inputs and formulas in Appify Custom Product Options. For example, you can collect width and height, calculate area, then multiply the result by a material rate.

Can I price Shopify product options by quantity?

Yes. Appify Custom Product Options supports quantity discount rules. You can use simple quantity tiers or more advanced rules that depend on quantity plus another value.

Can Shopify product options use pricing tables?

Yes. Appify Custom Product Options supports pricing tables that can be referenced inside formulas. This is useful for material rates, width and height grids, size brackets, and vendor rate sheets.

Can I use size and quantity together?

Yes. You can calculate price from size, then apply quantity-based pricing logic. This is useful for stickers, signs, packaging, printing, blinds, flooring, foam, and other made-to-order products.

Can I use Shopify variant price inside a formula?

Yes. You can start from the product or variant price, then add custom option pricing on top. This helps when base pricing is already managed in Shopify.

Can I calculate shipping weight from product options?

Yes. Appify Custom Product Options supports formula-based weight calculation using option inputs, pricing variables, and pricing tables.

Can I generate SKUs from selected product options?

Yes. Custom SKU rules can generate SKUs from option values, choice fragments, dimensions, and templates. This helps with production and fulfillment.

Do I need custom code for size-based Shopify pricing?

Not always. Many size-based and quantity-based pricing workflows can be configured inside Appify Custom Product Options with formulas, pricing tables, variables, fees, discounts, weight calculation, and SKU rules.

Price Shopify product options by size, quantity, and pricing table with Appify Custom Product Options

Size-based and quantity-based products need more than simple option fields.

They need pricing logic that matches how the product is made, sold, shipped, and fulfilled.

Appify Custom Product Options helps Shopify merchants build that logic with formulas, pricing tables, pricing variables, quantity discounts, fixed fees, price adjustments, formula-based weight calculation, custom SKU rules, and live pricing.

That means shoppers can configure products and see prices before checkout.

It also means merchants can reduce manual quoting, avoid variant clutter, and keep custom product pricing easier to maintain.

Ready to build smarter custom product pricing? Install Appify Custom Product Options from the Shopify App Store.

Related help docs

• How Pricing Works
• Formula Editor
• Pricing Variables
• Pricing Tables
• Using Tables in Formulas
• Quantity Discount Rules
• Weight Calculation
• Custom SKU Rules
• Fixed Fees
• Price Adjustments
• Price Summary Display