I'd offer to buy both at $2200.
As others have said, he wants $2200 for just one, and then throws in another game at only $800 more?
Something's up, and I wouldn't trust that reasoning. A couple have made it clear you'll be dropping $500 - $700 more just getting Centaur on its feet. If that's the case, make the seller take the hit by going for both for the price of one.
Drop $2200 or $2300 in cash on the table and state that you'll take both. You'll be amazed the psychological swing cash can have on someone when it is right there in front of their face.
Seriously ....$2200 for a Centaur in that shape. This hobby is becoming nuts....