Oh that ad has made the craigslist rounds from northern California to southern California.  Cracks me up every time.  At least this time, they didn't add in the line that marans eggs are the only ones that James Bond will eat or something to that effect.
BTW, out here, people will pay as much as $8/dozen for organic backyard eggs, especially a multicolored dozen.  I'm not one of those people, and I do not know those anyone who can afford that much money for a dozen eggs.  By and large, though, the average price for fresh backyard/free-range eggs is $3 to $4 a dozen (more for the multicolored packs and/or larger eggs) and about $5-10 a dozen for fertile "backyard mix" (i.e., buncha mutts) hatching eggs.  
We are just now getting enough eggs to sell, and we are selling ours for $3/dozen.