Oh, those things are pricey, hiring one is $700 for a half-day around here. (But they can do an amazing amount of clearing in a half-day)
The machine starts at about 60K for one in good shape, you need high-flow hydraulics, so not just any old skid steer will do the job.
The attachment, you just bought the machine again, it's gonna set you back another 50-60K.
And again for the truck and trailer to haul it around...
These things are in super high-demand around here, and usually sitting in a forest somewhere. Loading them up and moving them costs $, and you practically have to get down on your knees and beg to get someone to come out for a small job.
But they are sure fun to watch, that 300' path took about 45 minutes...