Thumb Score: +10 Sureler via Amazon [amazon.com] has Nicwell Cordless Portable Rechargeable Water Flosser for $27.98 - 50% when you 'clip' the coupon on product page - 10% when you check out via Subscribe & Save = $11.19. Shipping is free with Prime or on $35+ orders. Price: $38.80 lower (78% savings) than the list price of $49.99 50% off coupon applied.