How much does this cost to the nearest dollar?

Keypad Door Knob Lock, Keyless Entry Door Lock with Anti-Slip Handle, Auto Lock, Waterproof Electronic Black Door Knob, Safe and Easy Installation for Home, Office, Hotel and Garage
Easy to Install This smart door knob is very easy to install. Just need a screwdriver, it can quickly be finished just by following the steps of the user manual we provide, no extra drill holes needed. Enhanced Security & Durable The keypad door knob enter lock is sturdy and durable. With automatic locking retractor, the door will automatically lock behind you after opening for 2.5 weatherproof, works great in any weather. Special Anti-slip Handle Using special pattern design, both beautiful and non-slip, so that your children can easily open the lock. This electronic door knob is

Price is $40.00

Price: $39.9