The Deep Crack ASICs had 25 processing units per chip, so 44,544 "cores" total for the EFF DES cracker. The crack.sh FPGA setup has 1920 "cores" (48 boards, 40 "cores" per board).
$250K in 1998 is $400K today, if the inflation calculator I found on Google is correct. So there's a 4X decrease in inflation adjusted cost. Not an order of magnitude, but it's something.