OP here - It was interesting to read all of the different responses to my post. It sounds like a lot of you are paying similar prices for your costumes as well (and to the ones who aren't - I am a little jealous

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I have two dd's that dance. One that takes 2 classes and one that takes 5 classes. On top of the costume costs we also pay a recital fee (I think it is either $25 or $50 per family) and tickets are $10 per person for each night. I don't begrudge the studio owner her profit...it is a business after all. And I really hadn't thought that much about the personnel costs for ordering and handling all of those costumes. Measuring the kids shouldn't cost anything because it is done during the regular class time. However, I am still curious about how much the costumes cost vs. how much we are charged. (We never see an invoice...we are just given a total amount to pay for a deposit and then a total amount to pay for the balance).
BTW... I pay $149 a month for the girls to take 7 (total) classes that each last 45 minutes a week. When I signed them up, the owner told me it would cost $119/month however after a few months of paying that I was told by her assistant that it was actually $149/month. So I had to pay the balance between that amount for the first few months on top of the costume balance (which irked me a little at the time). I guess it's just a little bit of a shock when you add it all up and realize how much you are spending.