@jellybirddesigns wrote:

The better way to do it would be to set a Buy It Now price at a level you are happy with. Then add "Immediate Payment Required", and you'll never have issues with non-payers again.

While I absolutely agree with everything you said, some items, like what the OP has listed, sell way better as an auction. Most of my items sell at auction. It's been several years since someone bought as a BIN. My listings are auction, with a buy it now added. Some are listed purely as BIN. 

Unfortunately for the OP, they have listed a popular item, so the potential for scammers is high, plus non payment. Mostly because the buyer finds it cheaper elsewhere.