I have absolutely no idea what I'm talking about, but could you work out a deal with an online retailer (Amazon, FamilyVideo, etc.) to include links to their products in your reviews/previews and have them pay you a small commission based on sales generated from the links?
I know you used to include links to Lik-Sang in your import coverage. I don't know if you made any money off resulting sales, or if you just got free import games to cover for the site.