eBay is like anything else in life. It is safe if you use common sense. I've been a member there since the fall of '97 and have never been burned as a buyer or a seller.
EDIT: Just looked at the listing. It's a piddly $15 item and the seller has 168 positives and 0 negatives. I'd say that you're not going to have any problems on this one.
Russ, NCNE