Im convinced people dont take my advice because they want to take the risk of NPB to get more action on their auctions. If that is the case, then you as a seller deserve the NPB from a bidder.
I think I have suggested this various times in various posts and no one ever responds to it...
Selecting buyer requirements
What are buyer requirements?
You can block buyers from bidding on or purchasing your items by specifying buyer requirements. You can block buyers who:
Don't have a PayPal account
Have unpaid items recorded on their account
Have a primary shipping address in countries you don’t ship to
Have reportedly violated eBay policies
Have a Feedback score lower than the number you specify
Are currently winning or have bought 1-100 of your items in the last 10 days (you can specify the number)