Are you sure it wasn't any kind of settei or
similar? Those are almost always copies and i have
seen them arrive to those high prices.....

If the auction arrived to $800 that means at least
other person was willing to pay such amount.

Why don't you post the link of the auction? This
way someone may be able to give you advice... Who
knows, maybe the price you paid was not that bad
and you can recover most of the money if you
decide to sell part of it instead of keeping it.