I paid $1K about 3 years ago or so. But, that was when you could still buy Nucore which makes it really easy to swap. I would say the value is about the same. As someone said, $1200 if comes with a 2nd PRISM card.
It does take a ton of time and hassle to change if you don't have that. Swapping the ROMs is not simple and then you need to do the software update. The update software is very touchy on the PC it runs on. The best way is with a PUB card (you can rent from Rob Anthony/Borygard).
I do agree that the game is underrated, but I would put it quite a ways down on my list. RFM is *far* superior and is what usually sits in my cabinet. I still laugh at the callouts on that one.
Best of luck!
Jaz