the (basic) formula for pricing crafts/quilting is:::
cost of materials x 3
you can adjust from there- how much would you be willing to pay?
it is pretty much impossible to get time out of our craft- but materials x 3 is a (fair standard) for starting pricing.
usually for family if i'm going to charge them for something i only charge for actual cost--what i have into it-
but it is totally up to you what you think is fair.