I found a c02 bottle in a abandoned building

[brewmonk]

offer him 10 bucks.

then when he says no, call up a local brew club, and start asking again.

(good luck, I'm gone.....)

 

[Tlylebrew]

Some people on here crack me up. The OP did nothing wrong, its not like he stole the thing, and better yet he was trying to let other folks know what could happen if they purchase a used tank of Craig's list. You try to make him out to be a criminal. All I can say is WOW!!!