In order of appearence:
1 - beaten up, chinese digitizer (pretty low-medium quality), faulty gsm modem ("all telephony functions deactivated..."); bought it almost new with its box
2 - beaten up even more, faulty original digitizer, missing stylus, missing kickstand magnet; used for charging all batteries; bought already used
3 - good overall state: the keyboard is mint condition (looks like the dude who sold it to me preferred onscreen keyboard over hw one), superficial scratches on digtitizer; bought used
4 - even better state, bought used with its box, reflashed and is waiting in the box to break out and kick the stupid ecosystem nonsense's a*s.
Currently, I'm in search of original BL-5J batteries. And there are two N900 with pretty decent price floating in my radar view; my inner greed keeps telling me to go for it.