I have no idea what to charge for a dog harness. I make belts that are made to order and I have found that you will have customers that want quality, while others will say that they can get it cheaper at Wally World. Most folks understand the saying "you get what you pay for!", the others that buy nylon would probably purchase weaved grass cuttings if it lasted for a day! Good advice here on material charges and hourly fees. I am sure that you will do fine once you get established. First and formost - do business the way I do! The old fashioned way! ; )