Thumb Score: +15

eadana via Amazon [amazon.com] has 78″x80″ Eydna Dual Control Electric Heated Mattress Pad w/ 10 Hours Auto Off and 4 Heat Settings (King Size, Light Gray) on sale for $40.26 – and additional 50% = $20.13 when you apply code4PEJLV4U at checkout. Shipping is free w/ Prime or on $35+.

Note: Codes don’t always apply seamlessly. If you’re having issues with PC try clicking Review Order and refreshing the page. If you are using the Amazon app be sure to tap on the arrow that appears in the promo code box to apply the code before tapping the Continue button. Code works for Light Grey King Size only.