Don't worry, give him a couple days to get back to you, if not, then just file a complaint through the resolution center with ebay...once this happens he has so many days to respond. If things aren't settled to your satisfaction, you should get a refund...but in my experience it has rarely come to that, most sellers on ebay are pretty quick to make things right, it cost more for them to sell their stuff if they have bad feedback...also, don't leave any feedback until the situation is resolved...
S3 repros
Trikefest '12 '13
86 350x
87 250sx
84 70
78 90
Reproducing hard to find parts...check out the store