OP, I don't think a reputed member like him would even think of scamming people for $15 (IMO, not even for a thousand times the alleged amount

). I mean, common let's be serious here, and next time do your assigned job properly so that your future employer will want to give you extra, instead of stopping your payment

.
The thing is, your thinking isn't mature enough yet. People can scam for $1 too. This person is an obvious scammer.