Cisco, I suggest you post your seat in a free classified in the "Chop Shop" forum of labusas.org. I sold 4 Hayabusa cans to two different people within a week in there. Neither of those people had any problem with sending me a money order and waiting for me to cash it before I mailed their goods to them.
Too bad that the person, who I see you're too polite to name, for whom you did this favor saw fit to take advantage of your good will and trusting nature like that. I had a similar thing happen recently, although I was only put to a lot of useless legwork and phone time and did not put money out like you did.
People who pull stunts like that, for whatever reason or excuse they may have, make the long-term members of these boards unwilling to do business with anyone except each other.