(Free/Paid) PopShops.com can provide shop pages for CJ affiliate programs with product feeds. (Free/Click Exchange) GoldenCan.com also provides pre-build shops for some affiliate programs with feeds. Both of these sites/programs also span ShareASale, LinkConnector, LinkShare, and other large affiliate networks with feeds.
I've tried GoldenCan.com which seem to be ok, you can also try affilistore which relies on feeds from CJ. But to get the feeds from CJ you'll need to pay a fee.
i use GTech's PHPbay Pro for my site http://fenderbluesjunioramps.com it was like $40. WELL worth it! (plus you can use it on as many domains as you want...
CJ's feed costs $200 one time fee unless you are a performer (making $10K+ per month). You can go to your cj account and then open a ticket via contact us. I would recommend doing this only if you are planning to make multiple websites or utilize multiple feeds (unless you are making good money and can afford $200 without a problem)