Buying an ecommerce package to use myself

Evening all,

This isnt a query on anything to do with code, but just a question abour ecommerce sites.

Years ago I used a package from a company called Candypress which is an ecommerce package coded in ASP and in honesty it was pretty good, and wondered if anyone can offer some advice on a similar package that can be re-skinned, and developed further for a small business start up.

This is the candypress site:

Something similar to that but in PHP and MySQL would be great.