The Carnival Red 1968 Firebird Ram Air 1 has gone through auction a few times, and never sells, and the price keeps getting lower.

May 2010 - Bid to $90,000 - no sale
May 2011 - Bid to $60,000 - no sale
Sept 2011 - Bid to $50,000 - no sale

The 1968 Ram Air II car has been in a few magazines, and I recall seeing the bench seat with 4-speed, very rare car, may go for $100K if the planets are aligned.