Bitvae via Amazon has Bitvae Ultrasonic Electric Rechargeable Toothbrush Set w/ 8 Heads (Black) on sale for $19.54 – $2 off when you ‘clip’ the coupon on product page – 33% off when you apply the promo code 33HS2HE5 at checkout = $11.09. Shipping is free w/ Prime or on orders $25+.