300 seems like a great deal for the 84 250r, I would jump on it! They are pretty fast, and needing minimal work is good. It is definatly not a back yard cruizer, so be planned to have somewhere to ride it where you can go fast. Eventually you will wish your 200x had a little more zip, and this 250R could be the answer! Heck, buy it, and make it look nice and work great, and you could make a lot more than you pay for it, probly double easy, or save it until you can get the cash for the registration, and ride it. Im glad I live in Minnesota. There are lots of ditches to ride, fields, and groves, forests, etc. And if the atv is 25 years or older (made in 84 or earlier,) you dont need any license plate, or registration of any sort! Good luck, and let us know what you do.
THE 80's RAGE! Currently owns:
81, 85 Yamaha Tri Moto 125
83 Yamaha Tri Moto 200 x2
82,83 Yamaha Tri Moto 175 project
85 Yamaha Tri Z 250
84 Kawasaki Tecate 250
84 Honda ATC 70
85 Honda ATC 350X
84 Honda ATC 250R
(2) 84 Honda ATC 200x
82, 83 Honda ATC 185s
81 ATC 200
Lots of other parts and bikes