Hi,
I am not sure to understand correctly your request.
You want to have a specific price if three products of a specific category are in the cart, right ?
If it is, we don't have options for that by default in HikaShop, but what can be done is to create a coupon restricted on the desired category, and then create a plugin based on the function "onBeforeCouponLoad(&$coupon,&$do)".
In this function, get the content of the cart, and based on that if there is indeed three products of the desired category, set $do to "true" else set it to "false", like that the coupon will not be added if conditions are not met.
Here is the documentation for the plugins:
www.hikashop.com/support/support/documen...entation.html#coupon
If you are not a developer, you can still post a request in the commercial jobs section of this forum.