To help with price concerns, have you perhaps considered changing how seat sales are done? Perhaps instead of storing an order book of seats for sale you store an order book of seats wanting to be purchased? This might help motivate higher prices as you change the dynamic from seat sellers competing to seat purchasers competing....
Interesting idea. But it require buyer pre-pay for seat purchase. This makes nastyfans a bank. I do not want to run a bank. We already talk about this here:
https://bitcointalk.org/index.php?topic=86854.msg1477150#msg1477150