By Tom Bemis,Kirk O’Neil Online auction site is adding to its collection with a big deal to reach out to a specialized and devoted community. The creation myth of online auction site EBay has long been that the company was founded as a way to make it easier to find and collect Pez dispensers. The story may have been debunked long ago, but the myth lives on. Whether true or not, though, collectibles are a key opportunity for the the company. And eBay has now completed an important deal to help it serve a key market in the sector. Collectible Cards Have a Long HistoryCollectible sports cards dat…