A friend is an organic farmer in Saskatchewan who has been buying specifically older mechanical only tractors; after a heart attack that will require him to sell off his farm, he’s finding lots of potential buyers.

"old" tractors from 10+ years ago and new tractors are really ... not different at all. mechanically and structurally they are all the same. you can get a 20 year old deere/kubota tractor that might even be better than a new one because of the decline in manufacturing, cost cutting across materials etc. if well maintained they last forever, and the older gear is easier to work on.