If you can find a tractor that has the rear PTO, and a three point hitch, tillers are fairly easy to come by. (around here, at any rate.....) But, to get those, you either need to get really lucky, or get a fair sized tractor, that normally comes with them.
So far with in a 2-3 hr drive (1 way) I’ve found;
Gt345 with tiller, mower, + items, $1400
wheel horse tiller, mower; $700
Jd210, tiller, front blade, mower, sleeve hitch; $2000
1 guy has a Simplicity and an Allis both with tillers;$1700 ea
Wheel horse 520, mower, tiller;$900
Simplicity brodmoore with 1 yr old motor with tiller;$850
Jd140, new carb, electric clutch(pto?), deck, mule drive (whatever that is) #33 tiller;$1500
Jd110 with mower, tiller, hub caps;$1400
Jd140 H3, bunch of repair/service, tiller;$800
Just have to decide.