If you choose the $20 per print box, that tells David that you will pick the print up at the Convention (the other option includes a $7 charge for shipping, if you are not attending the convention).
As you complete check-out, there is a spot to "send a message to dealer"(click on it) - just tell David what print #'s you'd like to reserve.
Sorry, can't help you on the frame question...

See you in Vegas! Weeee!