Kidde Battery-Operated Combination Carbon Monoxide and Smoke Alarm $19.98 (Reg $33.99)

Amazon has Kidde Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking Alarm (KN-COSM-B) for $24.97 - extra 20% off during checkout = $20. Free Shipping with Amazon Prime (free prime one month trial or Free student accounts, and Amazon Mom accounts) or with $35 or more purchase.  

1. Click here - will show as $24.97, add to cart
2. Head to final screen of checkout, price will drop to $19.98