Shopping Cart System

Hello.

I want to start a site similar to this = http://www.bigcartel.com

So I can sell shopping carts to my users. I heard there is some software called x cart or x shop that will do it but it just needs modified. If you could make this, please email me at joel.kendall@leakmob.com or aim: thecrownjoel with what you’ll charge.

preferably php unless u customize software already made to do this.