If I'm looking at the correct listings, the person has indeed "bought the item"! They ended your auction with a "buy it now" which is NOT the same thing as "possibly order it if you agree to my stipulations".
I think I'd remind him of that fact - in a polite way, of course, and then I'd consider changing my sales to "immediate payment required for buy it now".
Some people have a lot of gall!!!!
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Glenda
To Golf or Not To Golf? What a stupid question!
Glenda