I had one as my first bike. Awesome bikes! Reliable is an understatement! No matter what the weather or how long it sat mine would always start on the first kick. I rode mine until pretty much everything on it was falling apart except the engine. Looked like hell and finally stopped moving due to a broken rear end but it still would start on the first kick. In great condition around here it would probably go for between $500-600.
1984 ATC 110
-Cobra Exhaust
-Moose Air Filter
2005 Brute Force 650
-stock, so far
2003 Honda XR 400
-Utah Sport Cycle Skid Plate
-Acerbis Hand Guards
-Dirt Bike Gear.Com Balistic Bag
-Works Connection Frame Guards
-Uni Air Filter