Here's my TRK-12 on the left, in very rough shape which I found for almost nothing. But the nicer replacement cabinet on the right cost me almost $1,000 - empty! A modified, but restorable cabinet in good overall shape like yours with modified but probably restorable innards would have to be worth
a lot more than an empty cabinet.
As Steve says, prices can be all over the place. You have no easy way of telling whether the picture tube in the set is good, but good CRTs had been bringing up to $2,500 - IF you could find one.
I'm over in New Jersey. If you need help moving it, just ask.