how much does one of those tools run for 
It's only for OBD-II vehicles (1996+ and
some '94 and '95 models, like my '95 T100 which operates under the GM protocol "VPW") and here's the ordering page I got mine from:
http://www.obddiagnostics.com/order.htmlThey offer it completely assembled for $88 (includes shipping)
Or for you electronic junkies you can order just the parts as a kit and do all of the sodering your self for $38 or $55 with a circuit board. And these prices include shipping too.
So it's very reasonably priced and it's working great. The program (software) is free and can be downloaded from their webpage - of course its useless with out the interface tool that they sell..
Worth every penny!
