I’m selling an affiliates product do i link to the referral link or my own page?

If im using (pay per click) adwords to sell someone else’s product (from an affiliate network) should I link the adwords to my page or the referral link to their site? My page seems to have more information about the product/reason they should get the product, but then i have to figure how many of them will go on and buy if any at all? What works best for those of you that do the same thing?

See original post by wwwyatt