I recently purchased a few links from a New Site. The links were very affordable. And it seems to be a pretty good traffic return on my investment.
LinkExperiment is a New Site where the idea is that you bid on link position on the site. The higher the Bid the higher on the page your link is shown. The links are lifetime links so they stay on the site until your bidded amount is too low to stay on the front page. Take a look. The webmaster seems to be a pretty cool guy. I plan on purchasing a few more link in the future from him.