K&N = $30-40, as mentioned by Kremit.
MAF adapter = $25.
That cuts $40-45 off of what was stated above and don't forget these are retail prices, if the maker gets them for less, he makes the profit. It is a good price overall.

99 SVTC, T-Red, #652/2760-12.8.1998 Mother#@%@!* did I sound abstract? I hope it sounded more confusin than that!