Im kinda knew to Ebay and this is only my second sale, and there is a problem.......
The auction ended about a month ago on a GameBoy Advance i was selling. I didn't here from the buyer for about a week after it ended, even after sending an invoice. So about ten days after the auction ended I got an Email from the buyer saying that they had put the money in the mail. Well, now its 2 1/2 weeks later and i still haven't gotten any money, but i got an email today from the buyer wondering if i have shipped it yet becuase they sent payment over 2 weeks ago. I have no idea what to do

. Should I email them back and say i still havn't recieved payment, I dont want to sound like im a scam, BUT I dont want to get scamed either

. Should i contact Ebay and get them involved? The sale was only for $25 shipped, so i'm considering just sending it and avoiding the hassle.
I should've said i only accept PayPal

.
Any experienced Ebayers have some advice.
Thanx