Where is the traffic coming from? Niche specific forums. This site doesn't rank anywhere on page one, more like page 7 or 8 depending on the hour, day, and if I woke up and rubbed my stomach while patting my head four times.
Why is that little traffic converting? Because its laser targeted. The site contains information on the product they are seeking. This is a physical product and has absolutely nothing to do with MMO, dating, adult, weight loss or any of those "ever-green" niches.
Making money is the easy part, its finding the targeted traffic that tends to be difficult. So don't just go for traffic, seek out the targeted source and you will see sales.