I ordered replacement brush heads. They have a 30 day guarantee. I found the needed brush heads for half the price somewhere else. I called to stop the shipment, but I was too late. The brush heads came. I returned the items following their instructions. I did receive part of the money that I paid. I was told that the reason I did not receive the full amount was due to a restocking fee and the initial shipping fee. This was not written anywhere. Sounds like a way to keep my money. Beth