I'd still like to see some restriction. The good thing about this site is the trust and collegiality amongst the members. I dont like the idea of fly-by- nighters coming in, dumping  / offloading, then disappearing.

Agreed.

Also, the possibility of no or low post count people scoring absolute bargains that were intended for regular posters.

It's cool if you have been a member for a while and have posted once or twice.  However, lurking isn't really contributing is it.

Keep the 20 post rule IMO