scotmick~
Sounds fishy. A GZ250 should always have a 5th gear.
Sounds like it's either broken or has been modified.
That could cost you a lot more to get it fixed.
Here's one just 14 miles away but a little more:
http://www.cycletrader.com/listing/2006 ... 0-97133809
I would get them to come down on the price on both of them whatever you do.
Good Luck.
:2tup: