I bet the one in Wittier(spelling?) is real. That's an accurate price. Other guy could also be trying to gauge interest at a high price. May be trying to have it sold before he buys it.
I highly recommend the Honda Fatcat. I've ridden BW's to. The 350's do pretty good power wise but not designed as well as the Honda. Picture the BW as a sport machine. The Fatcat as a utility. The Honda is bulletproof. They're not a high performance machine but a blast to ride. Great for exploring and slow speed. might lack power in sand(i've never ridden on sand). Also great for beginners and girlfriends to. I reccomend buying a clean one instead of fixing one up. Plastics were IMPOSSIBLE to find in mint condition. There are reproductions now but I'm not sure the quality. Will be ordering a set for my closet soon. I'll know the quality then. They're a great machine. Even friends who thought they wouldn't like it are hard to get off it once they try it. Don't jump them though!
My favorite ATV so I may be a bit biased toward it
Good luck