lynlee - shut up! You KNOW you're not doing anything wrong - don't let someone you don't know pee in your juice girl! The dude is wrong, wrong, wrong, (!) to ask for the handout.
Go re-list that sucker. The sale of the mod will be a blessing for someone else - they'll get a deal, you'll get some cash and the 2 of you will be happy. You don't owe anyone an explanation.
You should only feel guilty in 3 circumstances: immoral, illegal or fattening.
Selling a mod or PV you won is none of the above. You didn't steal it. The rules of the contest didn't say you had to keep it for XX number of days. That's just one guy with a mouthful of sour grapes.
Now go on and relist. if he gives you any grief, let us know and we can set him right. Cash talks. trash walks.