Selling text links at Gamerz-Forum.com which has 3.2k+ members and 6k posts. The site has a PR of 3 - 4. The links will be 5.00 a month and placed on all pages so you have links on over 6k pages.
Payment via Paypal Subscription.
Domain:
http://www.gamerz-forum.com/forum
A 5% discount for every extra one you buy. Ex:
1 Link - 5.00
2 Links - 9.75
3 Links - 14.25
Note the discount is off each link so the first link is 0%, second is 5%, third is 10%, and so forth.