I agree with the "get them to purchase supplies" idea. Not necessarily with the "3x the cost of the materials" idea. What is wrong with charging for your time? Is it that hard to figure how long it takes to make one unit of the quilt, multiply that times the number of units, and figure how much you want to get per hour? I do this all the time when quoting hand-quilting jobs for customers. Then add a 20-25% fudge factor. If I went with the first ballpark figure off my head I would be working for pennies.
Imagine if an artist priced his paintings at 3x the cost of materials. Or if you could get a beautiful, hand carved piece of furniture for 3x the cost of the wood. Or an Irish knit sweater for 3x the cost of the yarn.
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