What made A bodies non-popular

how much was the superbird and daytona, new straight from the show room? if i remeber correctly from wat ive read and seen and such, the highest cudas and chargers and challengers and road runners either with a 440 6 or a hemi 6 pak, and i think some came with the offset dual 4bbl. were around 3 or 4 grand maybe less maybe more i dont exactly remeber but 3 or 4 grand seems to stick to me.