[notmytarga]

Money orders have a charge as well.

Cashiers checks have been used for lots of scams because they are so "trusted", now that is changing and they aren't trusted as much. Even drawn on a real bank vs. La Banke de Nicaraqua. I handled a $50,000 cashiers check today - it looked pretty boring for its value - just printed out on a laserjet behind the counter. No obvious fancy watermarks, imprints, graphics or anything. The key is to be able to call the bank and confirm the check and amount. They won't cancel the check like a private one can be. Only then is it as good or better than cash - IF it is made out to you!
Don't hand over the bike until some of this due diligence is done.