I would suggest, looking for people on Pokegym, who are also ebay sellers, if your worried about it. Most of us ebay sellers, have links in our signature. I would suggest that, that would be the way to go. I have a link in mine, as do a few of the people who have already posted. There are quite a few people on here that sell on ebay, so I would suggest one of them would be a good choice, if they have good feedback of course.
JMO,
Drew