Ok there are lots of different types of scripts and services that help you build a full affiliate store. (No carts are needed when you are the affiliate.)
What you are looking for is a datafeed tool or script.
Check this out:
PopShops - Hot Datafeed Store Builder
I think GoldenCan is still around. Datafeedfile may still be around, not sure.
Here's a free one I don't know anything about. Careful with free tools like this because the developer could possibly swap his affiliate link for yours part of the time and some of them do this in lieu of payment.
Affiliate Datafeed Processing Tools - FeedProcessor.com