Not sure what the fuss is there. Seems fair for a brand new game, maybe even fair for a kit.
RoadBlasters was a pretty hot game bitd as far as I know, probably took in great earnings. It's only worthless nowadays because the cockpit is prohibitively large and covered in decals nobody reproduces, and the kit is probably the 2nd or 3rd most common thing Atari ever produced.
I am curious however whether the receipt is for 5x cockpits, uprights, or kits though.