As a seller that is up to your discretion. You can sell to who ever you want, the person in question has been online recently and if no communication between you two privately I would put items back on the market.
Agreed. Prompt P.M's and immediate payment are mandatory in trading threads when buzzing. It's what makes this forum work efficiently and courteously otherwise chaos would reign supreme!
I was going to say that an emergency may have occurred, but if he was spotted on this site just recently?...
Maybe post on this same thread that buzzer has 24 hours to make contact or items will be relisted and negative feedback left? I dunno? I havn't read the trading rules and TBO I don't need to. It's called manners.