Old cat skinner trick ; dig out backside and push dirt onto opposite high side building a ramp six feet higher giving you more leverage to push from ,pack it down before you try pushing .Back cut as deep as machine is tall ramp the same.,..
It depends as they are few made. Last time I quoted a new one was 90-100k. We paid a little over 30k for ours a couple years ago and feel like we got a good deal on it. They have a 80hp+ 4 cylinder turbo diesel engine and weight about 10k lbs. Ours is a sweco 480 trail dozer 2003 I believe with about 200hrs (was owned by a California state park)