> ## Documentation Index
> Fetch the complete documentation index at: https://print.app/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Tutorial: pricing through the theme

> Run a gang sheet without Print Options: the builder writes the billed length into the theme's quantity field, and the product's unit price does the rest.

If your product is priced per inch or per foot with one flat rate, you do
not need Print Options. The builder can write the billed length straight
into the product page's quantity input, and the store prices it as
*quantity × unit price*. This tutorial uses Shopify's Dawn theme; any theme
with a quantity input works the same way.

<Steps>
  <Step title="Create the product priced per unit of length">
    Add the product with a price equal to your rate **per billing
    unit** — \$0.75 per inch, say — and a single variant. The quantity
    the customer buys will be the inches of film.
  </Step>

  <Step title="Find the quantity input">
    On the product page, inspect the quantity field. In Dawn it is
    `input[name="quantity"]`; other themes use ids such as
    `#quantity` or `#Quantity-…`. Copy a selector that matches exactly
    one input.
  </Step>

  <Step title="Create the design">
    **Designs → Create New Design → Gang Sheet.** Set the film, set
    **Bill per** to the unit your price is in (inch here), and under
    **Pricing** paste the selector into **Price target**. Optionally
    set **Price display source** to the selector of the element
    showing the line total, if your theme has one; leave it empty
    otherwise.
  </Step>

  <Step title="Assign and test">
    Assign the design to the product and open the builder. As the
    sheet packs, the theme's quantity field changes to the billed
    length, and the theme's own price logic follows. Save, add to cart:
    the cart shows 13 × \$0.75 for a 13" sheet.
  </Step>
</Steps>

## What this path cannot do

* **Length tiers and setup fees.** The store multiplies; it does not
  know about breaks or floors. Use [Print Options](/docs/gangsheet/pricing#path-1--print-options-recommended)
  for those.
* **Server-side verification.** The price is whatever the store computes
  from the quantity in the cart.
* **Fixed sheet lengths** work: the builder sends the sheet count, and the
  product is priced per sheet.