Build your own PC settings


I was wondering if you can help me? I have tried to make sense of this, how do you configure *create your own farm box * (like build you own PC) and how do you set up the subscriptions? to go with it? like: Instant Demo - CS-Cart Multi-Vendor Demo Try Free for 15 days

I want to be able to set up create your own farm box.

Do I list all the products first?

All the prices are discounting as well, do you know why?