Ive been looking on craigslist for a used supercharger kit, kenne bell, vortech, powerdyne and whatnot. Realistically how much does a used supercharger cost? Some people are trying to sell their used kits that cost 3,000 for 2200 with 6000 miles on the supercharger. Im just trying to see what everyone else thinks. So far i found a vortech s-trim for a 87-93 fox full kit. For 1250 and 4000 miles on it. Pretty good? Im looking to get one for $900. But i just need the blower, and the mounting pieces. No injectors maf and all the other parts, but people are still trying to get upwards of around 2000 outta me.