AMAZON shoppers are leaving rave reviews about a dental gadget that's currently £50 cheaper than usual. The Philips Sonicare Cordless Power Flosser 3000 is been slashed to £69, down from £119.99. Philips Sonicare Cordless PowerFlosser 3000, £69 (was £119.99) The device delivers a complete clean in 60 seconds, thanks to a 360° rotating nozzle and...