Question on tickets for live shows

[tsumekaze_]

Hey Karen, so I used your middleman to get my tickets and everything went fine, seems like I won the ballot! ^^ thank you very much for your help!
Still, he only asked me to pay him via paypal the price of the ticket to apply... he didn't ask me about any fee, nor did he mention any. I guess I have to pay him something, but does he expect I do without telling me? lol
How do you usually do?