The best price is what ever your market will allow. In some areas, there are so many selling eggs that they couldn't expect to get more than $2 a dozen yet in others, people are selling for $4. Just check your local craigslist, newspapers and farmer's markets for some general pricing for your area.
X2. Around here the locals don't want to pay more than $1.50-2.00 for eggs, so I have a hard time selling my $5.00 non GMO pastured eggs. It deffinitly varies by the area. Hope you get them all sold!