I've been looking to jump into MF for a while. Among some TLR's I've been eyeing, the Mamiya RB67's really have me for some reason.

I found a local craigslist ad for one that seems like a really good price. Seems to be about equal for what they go for around here, and much less than the Bay. Here is the ad:

Mamiya RB67 Medium Format Camera - $200

Mamiya RB67 Medium Format Camera Outfit. Comes with instruction manual, metal case, 90mm F38 Lens and two 120 film backs. $200.00
The ad does not include pictures.
l'm wondering when I call, what I should be asking? Also, is this a good price? Would I be insulting him if I tried to haggle?

Thanks in advance for the help!