Does this sound like a good buy?

I don't know much about these tractors, but she sure looked pretty solid.

Has PS, 3pt hitch, loader. Not sure but didn't look like it had a TA. Maybe it did. Needs paint and rubber, appears to have had engine rebuild as everything under the hood is dull yellow.

The fella is asking $3500 or best offer....

1) good price?
2) What to look for on this model?

THanks a bunch....

I had a 504, came with a farm I bought. Vendor had just rebuilt the engine at about 1,200 hours. He advised me not to keep it long. I had planned on trading my 300 on a new 1066. After a day in the field using both 300 and 504 on a 3x16 trailer plow, the 504 got traded and 300 stayed. Remember also 504 was supposed to be 8-10 more hp than 300. No so on that day, my old 300 out lugged the 504 on the 3 bottom plow by a wide margin. My 300 by 1975, was on it's 4th set of pistons and sleeves and probably had about 16 to 18 M hours on it.