Not sure if this question was asked, but can vendors sell used items there (clothes, jewelry, shoes etc..) and if so, is it a profit?

Yes, you can sell whatever you want. I believe there is a fee to rent a spot at the auction but anything more than that is a profit

Yes

You pay 10 or 20 dollars depending upon the location of the table and what ever you make is yours. You can actually rent as long as you want some people have been there for 30 years

Yes. There were lots of used items

Yes. Just goggle their number and give them a call.