There are thousands of companies who have that exact deal though.
If you plan on offering that many products, I think you should pay a designer to make you a customized solution. Having a cheap cart isn't a good idea if you plan on having that mahy products because it'd be hard to manage such a big amount. www.intershop.com is a more professional cart and is used by www.actionvillage.com which houses there own inventory, and have ALOT of products.
Somethingmore customzed would allow your designer to build an way to effective organize and manage such a big selection.
________________________________________________
expedite passport
entrenador