sorry, i don't follow cpu's much anymore, are you referring to the slot A Athlon that went up in price? this could be due to the rarity of these pieces as amd moved shifted production to the flipchip design to decrease costs ($$$ fabs).
when people with older slot a boards realized this, they picked them up. same thing happened with the 900/100 P3 flipchip. i'm assuming you can't run a new flipchip athlon on an older slot a board with a slocket. but i could be wrong, like i said i've kinda lost interest with intel and amd.
anyone know?