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Addon to CS-Cart and Multi-Vendor allows you to create promotion, that will discount products in category, depending on amount of products purchased by customer from other category.
We start from installing an extension:

Next we create new promotion. In promotion conditions we set category, from which customer must buy products to activate discount. In our example, this category will be Desktops:

In Bonuses tab we choose new kind of bonus, created during addon installation. Then we add categories, from which products will be discounted. In our example these categories will be Laptops and Tablets:

When customer adds to the cart some products from Desktops category, he will get discount for the same amount of products from Tablets and Laptops categories. Customer purchased two computers, so two tablets in cart were discounted by half (as defined in promotion configuration).

If customer will add to cart more products from Tablets and Laptops categories, they won't be discounted and notification will be displayed.

If there will be more than one product in cart from Tablets or Laptops tab, only cheapest products will be discounted, which amount is lower or equal to amount of products from Desktops category. Tablet is cheaper than laptop, so it was discounted. However, both products fit into promotion conditions.
We invite you to shopping!
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Contact information

SoftSolid has been an official CS-Cart developer since February 2010. We build add-ons that a store owner can set up without calling a developer: clear settings, sensible defaults and documentation. Every add-on is kept compatible with new CS-Cart releases.
2010 official CS-Cart developer since | 160+ add-ons in this marketplace |
5.0 average rating from 90+ reviews | 29 add-ons also on a low monthly subscription |
What we do for CS-Cart and Multi-Vendor stores
Beyond ready add-ons, we take on almost any development work for CS-Cart, Store Builder and Multi-Vendor:
Custom add-on development New features for your store built as separate, update-safe add-ons, from a small admin tool to a complete module. | |
Changes to existing functionality Checkout, product pages, promotions, orders, admin panel and vendor panel adjusted to the way your business works. | |
Integrations ERP and accounting systems, marketplaces and order management, couriers and parcel lockers, payment gateways, and any service with an API or data feed. | |
Multi-Vendor marketplaces Vendor plans, commissions, payouts, vendor permissions and tools that make running a marketplace easier. | |
Upgrades and migrations CS-Cart and Multi-Vendor upgrades to new versions, moving data from other platforms, imports and exports. | |
Performance and security Store audits, finding and removing malicious code, speed and server configuration. | |
AI and automation AI chat assistants trained on your store content, automatic translations and automation of repetitive work. | |
Support and maintenance Ongoing care of your store, fixes and keeping custom code compatible with new CS-Cart releases. | |
Turnkey stores A complete CS-Cart or Multi-Vendor store set up on a ready theme: configuration, add-ons, integrations, data import and launch. | |
Mobile applications Mobile apps for your store or marketplace, connected to your CS-Cart data. |
Our flagship add-ons
![]() | Base.com (BaseLinker) integration Exchange orders and products between your store and Base.com, and sell on marketplaces from one place. |
![]() | DeepL translations Translate products, categories, pages and menus into every language of your store: one click, in bulk or automatically. |
![]() | AI Agent / Chat Bot (RAG) An AI assistant that answers your customers using the real content of your store. |
![]() | Promotions for vendors Promotions with vendor conditions on Multi-Vendor, and vendors can create promotions of their own. |
Why merchants choose us
- Direct contact with the developer team, no ticket queue
- Add-ons for integrations, shipping, payments, ERP, AI and Multi-Vendor vendor tools
- One team for ready add-ons and custom work, since 2010
- Buy for $200 or more from our offer and get a 20% discount
Tell us what your store needs to do. We will point you to the add-on that already does it, or build a solution for your case.
Similar products
Make purchases for 200$ from our entire offer and get 20% discount.
The addon is available in the following language versions: Polish, English, German, Greek, Romanian, Spanish, Italian, Russian and Chinese.
Make purchases for 200$ from our entire offer and get 20% discount



