I wondered about my prices on my dessert cookies, as well. These are the "normal" type cookies I do aside from my photo cookies, but not normal flavors. Anyway, I was at the mall and there is a Mrs. Feilds there. I have bought cookies there before, individual ones, without batting an eye, then I added up 1 dozen at that price and realized they were twice as much as mine! Of course, I am not paying premium on rent at a mall, but still, I don't think your price figure is too high at all.
I got stuck one time like that, too. I made a custom cake topper for a wedding cake and the bride told me exactly what she wanted. She spent over $1000 on her cake (I worked at the bakery, didn't get to pocket that
) So anyway, after all the fondant sculpting and painting, and about 5 hours of work, I collaborated with some people to come up with the price of $250 for the topper, which she would have never found anywhere else. Her husband didn't blink when he came to pick it all up and wrote me out a check, but she threw an absolute fit about it. I had to get my manager involved since the topper was a side job, but we got it worked out. She just didn't understand the custom work she asked for.