So yeah, I'm selling custom masks for $20, shipping included (a first-class stamp is enough to mail such light stuff, so why not?). My Paypal and e-mail is Kjartana[at]comcast.net
A clear and unambiguous description of what you want drawn on your mask is required - and a snail-mail address to send it to, natch.
If you'd like to avoid Paypal (they DO seem to be getting a little nutty), I also accept checks and cash at:
Kjartan Arnorsson
1505 W. St. Mary's Road, 123
Tucson AZ 85745