After years of giving away whatever deal I can get I have learned that the most fair thing for us all is to charge what you must to cover several things:
- the years of experience it took to get the right size and connection and capacity etc
- The materials at their face value, not your loyalty discount
- the cost of the trip to go shop and get quotes and pricing and check lead times
- the physical cost of using your vehicle and body to transport items or cover the shipping and delivery costs
- sidenote: I buy to have some backup and extra pieces to save trips. I don’t discount returns unless it was a large planned overage or hard to estimate. The cost of me running returns incurs new labor costs and is better to try to meet the customer at what is fair
All of these are rational factors and customers usually see the value in what you’re doing for them by the end product
