Obviously, condition is important, but the last few I've looked at (probably 4 or 5 over the last couple years), have ranged from 2500-3700, The 3700 was as close to mint as I've personally seen. The 2500, was in full working order, and minimal playfield wear, mainly needed a good shop out, and new cab decals.
For 2200, I'd want good (not perfect) play field condition, but would expect cabinet fade/wear.
I love that game - probably my favorite artwork of all the DMDs.