HI, I have used 2 different companies for their free trial of tooth whitening bleach, the first was too tricky to use...by way of mixing amounts and an uncomfortable holder to keep in the mouth for too long, I was only charged 3.95 for shipping and cancelled with no problems. The second company was superb, I used the pen application product for 5 days and it made a marked improvement on the discolouration of my teeth, I have lots of product left and only paid for shipping at 3.00....it is not a scam and as long as you cancel before the 14 days trial is up there is not a problem!!!! I have just ordered this one as above and with a promotion code have only paid 1.00 shipping.