Thumb Score: +13

HanYue Supply via Amazon [amazon.com] has 45kHz Nrqyon Ultrasonic Retainer & Denture Cleaner Machine w/ UV Light & 200ML Stainless Steel Tank on sale for $39.99 – $14 when you “clip” coupon on product page – $14 off when you apply promo code 8KGQ4PG4 at checkout = $11.99. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.