Ordered twice from these and both devices were faulty, in both instances I was told to pay the return postage and if devices tested as faulty I'd be reimbursed, they were BOTH tested faulty and it ages, a lot of hassle and them ignoring my emails but finally i got refund for devices only not the return postage, numerous emails to them asking for post refund but they just Fob you off, all the time. Not only that with the 2nd order I returned some unwanted coils in the same package (I'd ordered wrong ohms by mistake) Chris said it would be OK and they'd refund for the coils as long as intact) He said never received their end so no refund, they were sent in the same package as the faulty device they'd got Ok. Lame just lame. Never ever again will i use these.