I just received one of the $15 coupons, too!

I filed a claim against a seller for non-receipt of a DVD. The total was $5.15 with shipping, and because the seller was suspended for getting something like 140 negatives over a three-day period, PayPal ruled in my favor and put the money back in my account.
Now, I have a coupon from eBay because it thinks the dispute was automatically closed due to the dispute period ending.

I'm not going to complain. That $15 will come in handy for the new HP3D set!
