Like you, I have made one order from them and had no problems at all. I believe that there are some people who expect perfection from every on line hobby store and get cranky if it doesn't happen. One mistake doesn't mean they are doing anything intentionally, they are human and things happen. It really bugs me when they blame the hobby store for something that went wrong with the shipper, like HobbyPartz has any control over the postal service.
I will definatly be ordering from HobbyPartz again soon!!!