SellApp
Quantity Breaks That Drive Cart Value
A focused Shopify utility for Buy X, get Y% offers. Set tiers per product, show them on the product page, and apply the discount at checkout—without custom theme code.
"How do we run volume discounts without a custom build?"
Set tiers once. We sync and apply them.
How It Works
Three steps. No Liquid coding.
Set Quantity Tiers
Open a product, define Buy X / get Y% tiers and optional promo text, then save to sync offer settings to Shopify.
Add the Theme Block
In the theme editor, add the SellApp Product Offer block to your product template so shoppers see the tiers.
Discount Applies Automatically
When shoppers hit a tier quantity, the Shopify Function applies the matching discount at cart and checkout.
Built for Merchants Who Ship
Everything you need, nothing you don't.
Per-Product Tiers
Configure up to five quantity breakpoints and discount percentages for each product you choose.
Storefront Offer Card
A theme app block shows shoppers the tiers on the product page without editing theme code by hand.
Checkout Discount Function
A Shopify Function applies the selected quantity discount where it counts—in cart and checkout.
Offer Style Controls
Pick light or dark presets and tune card, tier, and price colors to match your brand.
Metafield Sync
Saving in admin writes offer configuration to Shopify metafields so your theme and function stay aligned.
Fast Install
Install, set tiers, add the theme block, and you are live—usually in minutes.
Simple, Transparent Pricing
One simple plan. Start with a free trial.
Monthly
- 7-day free trial
- Unlimited products with quantity tiers
- Theme offer block + checkout discounts
- Offer style customization
- Cancel anytime in Shopify admin
Set the tiers once. We handle the rest.
Install SellApp, publish quantity offers on your products, and grow cart value with a simple $4.99/mo plan.
Install SellApp