The folks at 3N1 Auto Computers, the folks I got my ScanGauge II from, have agreed to do a group buy discount for us. Their price is
$149 (which includes the shipping).
To buy, simply follow this link to this direct buy
http://www.3n1autocomputer.com/hummer_gb.html
If you have any questions, send them an email to
sales@3n1autocomputer.com.
Hurry - this link/offer ends 1/30 @ 2300 EST.