Sounds like a great price to me. I bought my TC24-D (previous model running at 200 rpms less) brand new in 2003 as a complete package. Tractor was itemized at $11875, 914A 60" mower at $2200, plus a few other attachments. That was my best price, and buying new from the dealer also had sales tax.
If you are serious about a CUT in that size, you will probably be looking for a long time before you find a deal like that again.
I love my tractor, lots of power in a small package but still big enough to do some serious work. The feeling of being tippy on hills is partly due to the relatively high position of the seat IMO, but that is also what gives such great visibility on these tractors. You have to be very careful with any tractor on the hills, no suspension and not very forgiving.
Hopefully you sealed the deal by now if you really wanted a machine in that size. Keep us posted.
Brad