A lot of supply and demand, for a mini excavator you can pay 60k for a used one or get a giant link belt for less money, not much demand for the monsters but everyone wants a mini. The pre purchase inspection is key and an oil analysis is helpful.
Sugar sand, even my tractor with new tires can struggleUsed machines are only worth what someone will pay for them. The worry I have about a rubber tire machine is the sand. A skid steer will do a lot of work but in loose sand won't do much. It depends somewhat on what kind of sand it is though. You don't need high flow to run a backhoe on a skid steer. It would be way too fast for even the most seasoned operator and running at idle or low throttle is not good for any diesel machine.
That is a Ditch Witch machine. It is still made although don't know how old the one is in the add. The fencing company I used to repair my fence after a 4x4 pickup slid thru it on ice [dumbass] owned one.
If you think that prices of used machines are unjustified then I would suggest that you price similar new machinery for comparison purposes. The market price for used machines generally mirrors the price for new machines of the same type.Thanks, I am still amazed at the cost of heavy equipment, I cant see how its justified except Im assuming that its assumed people are gonna make money as used in business so they escalate the prices.