Sheesh!!

If you make your listings immediate payment - then they can't have it

unless they pay for it.

They don't muck you around.    They want it?    They have to pay for it.

They don't pay, they don't get it.     It stays in your listings available to

someone who will pay for it

 No more non - paying bidders.    All your customers are paying customers

I don't know how to explain it any better - maybe someone else can

edit:  must learn to type (or think) faster

Padi's right though - won't work with auctions, only BIN