Shopping Cart script for software?

I want to publish my works of software online on my website. Is there a free, or extremely cheap script, that I could use that would create a shopping cart for my software? I have tried several other shopping cart software, but I hated how they looked. I was hoping it could like something like Adobe's old product pages, where the whole page was dedicated to that software, images, text, etc. Or at least something like it. I am not selling any physical items. Is there a shopping cart script specifically for software like this?