https://amzn.to/3WJgwIc Bitvae C5 Cordless Portable Water Dental Flosser (Black) on sale for $33.99 - $10 off when you 'clip' the coupon on the product page - $14 off when you apply promotion code YDVDNRMW on the checkout page = $9.99. Shipping is free w/ Prime or on $35+ orders.