Nor some odd reason when i was scouring the web for a hot rod to buy the first gen camaros would always seem to be fetching a higher price than first gen firebirds. So bang for the buck, and luck is why i own and like FGF,s. Their not making anymore pontiacs so i would only think the prices should start to go up down the road.
More Chevrolets were produced so to an extent, they have more fans. With no more Pontiacs being made, you aren't going to grow your fan base which means less future demand. Camaros are again like a$$^oles, everyone has got one(or so it seems). Generally, a 2010 Camaro buyer who decides he wants to go retro isn't looking to buy a Firebird, he (or she) is going to look for a Camaro. Some of the rarer Firebirds will continue to have great value(Ram Air II cars, etc.) but your average 350 3-speed isn't going to be going up much in value as the number of people in the market for them isn't growing and pushing up demand.
also, as the Camaros were cheaper back then than the Firebirds (by about $1,000 ) , many more were sold , and then now middle aged or older guys who had these or friends their high schools and couldnt get one ,always wanted one ...now want one again or finally getting one remember what those were , as the Firebirds were 25% or so more in price , they were the 'upper crust' and many couldnt afford them....so , now the cheaper car sells for more , the more expensive car sells for less...be happy you get the upgrade for less! funny how that works!