OBD2 - Non Tiger

[stubrennan@attbi.com]

Anybody out there know anything about OBD2 code 
readers?  I was trying to sort out a problem that caused 
the Check Engine light to come on, on my explorer, and 
went shopping for one last night.  The only one the 
place had was about $150.  And the warning light went 
out on the way to the store.  So I decided to postpone 
the purchase, and do some research.

Is this price typical?  Are there good and bad brands, 
models, etc.?

Stu