They told us the sample they sent was free until you try it & like it, and want to buy it. For now it's just a "verbal invoice" with no cost so you can try out the product to compare to current brand. They sent an invoice for almost $1,500 a month later! Filing a complaint with them now. Never even used the product because this seemed fishy & sure enough it was. I don't know how they are still in operation with all of these complaints. Lets see if they even tell us we can ship the cases back, and the fact that we will have to pay to ship it back is just terrible. There's no way the BBB hasn't dropped them.