I have never charged a person for molding a snowboard boot. You put it on a glorified hairdryer, wait, have them put it on and lace it up tight, make them walk around and LOOK AT ALL THE PRODUCT IN YOUR STORE, then done. Why charge for that, no "service" was actually given as I didn't actually do anything. More often then not they find something they want to buy too.
This; it is an excellent, brilliant way to do business. And very effective.
As a business owner myself, I appreciate when I'm a customer and something of a professional courtesy is sent my way (I do the same in my business). As a customer, it definitely leaves a positive mark in my mind, and I will always return to that kind of business for future purchases. In a way, it establishes a sort of trust.
The kind who are "penny wise but pound foolish," in other words, the type that try to squeeze out any amount of money (pennies), sacrifice future purchases (pounds), and don't get my business.