Apparently the set was intended to be 3 series with 750 cards. But due to Fleer's bankruptcy only the 350 cards of series of series 1 were ever officially released. Some of Series 2 made it out as a "test issue" but not much information is available about how they got out and how many got out. It probably has something to do with the fact it actually not a bankruptcy but a State Court liquidation. Upper Deck acquired the Fleer name and produced Fleer branded cards in 2006 and 2007. I don't know if they acquired any of the unreleased 2005 cards or if someone else got them in liquidation and backdoored them.
I don't know if anyone else has found more info. The most I have found is BCP's page that lists 2 sequentially?? listed cards as Series Two Prototypes (#423 and #501 don't sound sequential to me but that's another story). Sounds like more have since appeared but no indication of how they appeared.
2005 Fleer Tradition - BaseballCardPedia.com
Value will be harder than most to determine because of so little info out there
