How do you determine what the fee should be? Do you use a percentage or a flat fee?

totally depends on what mood I'm in and how "reasonable" they are being with their request.

ditto. The more PITA they are, the higher the fee. Actually, that sort of works with most orders.

Dang it, I knew that's what you guys were gonna say The need doesn't come up that often, but I suppose I thought I should have something at least sorta set...so that I don't let irritation cause a charge of double

I don't LIKE to take cake orders less than 5 days before the event date. So, if I have time to do a cake in that short amount of time, it's $25 rush fee.

My husband put it best-"Are you in the business of selling cakes or giving customers reasons why you won't sell them a cake?"

Money is money. If they first aren't scared by my high prices and have a reasonable request for a cake that is possible to do in a week, then I don't have a problem charging a small fee and they are usually understanding about that.