I think you should revise the buy/sell rules to be able to post a thread. I rather pay a couple bucks to join a forum then worry about making 25 meaningful posts when that is not what I want to do. Buy/selling has nothing to do with other parts of your forum Dan The buy/sell forum needs its own adult section both in the websites and in the domains category. Possibly in the the link exchanges also. Dan a lot of people are selling these type of sites now
I have a witty response for you but will summarize it, "... please post your cheap turnkey sites with fake stats elsewhere."
Why won't you want to contribute? I think the Buy/Sell is perfectly fine, except for the long 1 hour wait after you reach 25 posts.
It also helps you see if this is even the market for your sale. After 25 I think you will find out that you should take your turnkey sites and submission service to 2500 search engines somewhere else for a better chance of a sale.