Does anyone have experience with these machines and what they're worth I located one in my hometown, its on ebay and wanted to know what a good deal on these would be and if they're good to own/ride. Thanks....

http://cgi.ebay.com/ebaymotors...em=150129256485&rd=1,1

 

I have one. The Attex is the Corvette of AATV's. The superchief is the big block of Corvettes!!!! They are super fun to drive. Mine can do about 50 or so. That is crazy fast for a skid steer!!!!!!
I payed 1000 for mine not running. All it needed was a battery and the fuel system cleaning up. I thought I got a steal on it. If that one is anything like the condition he says it is I would say it should be worth about $2,500 or so.
Be aware, Attex has been out of business for about 20 or so years, so parts can be tricky to get.
They are SUPER fun to drive i wet grass!!!!!! You can do about 10 doughnuts in a row!!!!!!
If you have the cash and it goes for under $1,500 I would get it. This model is VERY sought after!!! FUN TOY.