I repeat. Don't trust zip-ty. In my opinion, they fail to recognize and address the shipping charge issue. When you send 2 confirmations to a customer that says $0.00 shipping, I don't care what the fine print on their website says. They know there is a problem, but they don't fix it. When a request is made for them to work with the customer who feels scammed, they say no. And, in my opinion, their customer service sucks.