Pretty standard practice i'm afraid. Way better and easier for the distributors to charge office to customer. We used to charge a 2 hour travel and 1 hour labor minimum at the last place i worked. Even when I was an independent, I charged round trip from my office, no matter where. Wasn't worth it to me to walk in a shop for less than 200-300. Half went to pay uncle sam, then my van that I used to spend 300-500 a week in fuel, then insurance. Never made anyone wait that long for service though, i would just work longer days or Saturdays to catch up.