Amazon sells for a LOT of company's (I work for a SMALL company & they sell some of our stuff). With that said, Amazon offers special shipping (Prime). The company I work for has shipping charges, but Amazon will bundle things from a number of company's and you pay little or no shipping. This is some thing special for Amazon customers (we don't sell on Amazon, but we do ship direct to Amazon and they sell), hope this helped a little with your question.