Roughly $500 vs $900 in direct operating costs when calculated @ 400 hrs / year if I remember correctly. Socata claims around 1500 nm range @ LRC and 1300 @ max cruise, CJ1+ gives you around 1300 nm. The TBM is fast and for 1 - 1.5 hr flights you would see little difference in flight times when comparing the two.
I am aware of 3-4 off market TBM 850s and a couple of CJ1s.
Let me know if you are interested and I'll put you in touch with the right people.
CP