are tickets transferable/sellable? Say, I'm not sure if I want to go, but I buy a ticket anyway, can I resell it later (perhaps at a loss for me) if I change my mind?
(I guess simply selling the private key doesn't work as I could have kept a copy)
(I guess simply selling the private key doesn't work as I could have kept a copy)
The private key on the paper wallet proves that you paid for the event.
A buyer of your paper wallet could not be sure that there are no other copies of it in circulation, and only the first presented at the gate will be admitted.
Transferring that mB to an other address is however possible, but you would have to do this with special care such that it goes to the other address in full and isolated, not lessened by mining fee and not mixed by other coins into a bigger output, and keeping the order of inputs to outputs. (following the rules of colored coins)
For now, you should consider the ticket non-transferable.
The organizer might decide to offer buying it back however, but that is not a technical question.
^^i add an information to the how-to and in the text below. 
