I was wrong, buy it now price is $2800. But I agree with Roy above, he could be parting out a tractor. I'd be contacting him and offering $3000 for the hoe and the sub frame if he has it. Yes, you will put a little more money into it, but would end up with a nice factory hoe setup for way under $4000 with the shipping. With no sub frame, I'd offer accordingly figuring you would have to find one at a tractor salvage yard, frame could end up being hard to find. The size is perfectly matched for your tractor. And for the jobs you described, it would work perfectly for and sure be better than using a shovel.
Chris