Update: Deal over.

Kwikset Convert Smart Lock Conversion Kit – Link

Hurry on over to Amazon where you can currently snag this for only $39.51 w/ free shipping!

• Get keyless entry and monitor your door with Amazon Key. Optional in-home delivery is also available for Prime members in select cities and surrounding areas. (Amazon Cloud Cam Key Edition required).
• Transforms your existing deadbolt into a smart lock in minutes. Replace only your current lock’s interior hardware while keeping the exterior hardware the same. Easily installs with only a screwdriver.
• Ideal for renters — keep your existing deadbolt and use your existing keys.
• 2017 TechHome Product of the Year.
• Replaces standard deadbolt – not compatible with interconnected locksets.
• Compatible with most Kwikset, Weiser, Baldwin, and Schlage standard deadbolts.
• Grant access to trusted guests. Family, friends, or your dog walker can unlock or lock your door via a text-based authentication process with Amazon Key.