That's not the typical way feeds work. I mean, I think you could do that if you are technical but not sure it would be practical.
The way affiliates typically use a datafeed is to display all the merchants products on their own site. So it looks like a new custom store with the affiliate's design. We have tools that let you build a store filled with 6,000 of the merchants products in less than 1/2 an hour.
Check out the National Geographic IPC DEMO at the bottom of this page.
IPC Free Affiliate Datafeeds