Agreed, it looks pretty standard for prices. I'd ALWAYS be careful when dealing with a Craigslist ad, you never know if they're telling you the truth about what they really have. If possible, ask to see the BP(s) you want BEFORE you buy them to really give them a good once-over yourself. A lot of people try and give away sick/unhealthy animals through Craigslist because they can't/don't want to take care of them, and people who see them beforehand won't buy them.
(If that's the real picture of the Mojave though, he's GORGEOUS.)