If you break the price down its a little over $6 a cookie, which you aren't just paying for, you're paying for the container and the paper and the time it took to make each one. Thats not that unreasonable. The price was not surprising, I think its because everyone comes from different areas, here most decorated cookies don't go for under $2.00, and thats simple design. Someone on here (that everyone raves about her cookies) from near where I live charges up to $6 per cookie for large and/or heavily decorated designs and she has to turn down orders because she's so busy. II most likely wouldn't charge under $70 for something like that (it doesnt say how large the cookies are, that would be a factor), its terribly time consuming and detailed.
I agree thats a lot for cookies, I couldn't afford it either, but then I have the time/skill to make them my own. People could make them theirselves, but then people could also open up a cake mix, and a can of ready made frosting and make their own cakes too (and thankfully not everyone does or we would all be out of business!).