Re: In the for sale section..
Just an average, non-paying member here. I think the mods do enough without having to babysit.
If you have enough time to list an item for sale, then you, as the O.P. have the time, and what I think is an obligation to mark it sold yourself, then possibly pm a mod to close/lock the thread. Maybe an exception for vendors since they sell more than one item more than once per thread.
Straight but not narrow.
I got some sugar for your HaterAde. It tastes better that way!