Best price on Google is $89
Woot is offering the 3-Pack Kidde Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup (KN-COPP-3) for the best deal.
Regular Price is $89.97 Shipped
1. Woot Price is $64.99 Shipped
2. Use coupon promo code MONKEYTIME to get it for $62.49
3. Free shipping for Prime members