So the mid size excavator are going to be a premium I bought a 2004 JCB js220 that’s a 22 metric ton unit Cost new $250k purchased it with 9000 hours and needed $10k of work but paid $25k for it buying units in the 20 ton range seem to be more plentiful and way cheaper I have move lots of rock and am keeping it around to build a bomb shelter the mid size may be more your size but I have never seen a cheap one I can move 10,000 pound rocks. Very relaxing I must say
ps I rented a 225 Deere for $900 a day it was awesome but would get broke fast so then I purchased the JCB btw steel tracks are no problem with dirt roads if mostly going straight I also have 5 acres