Here is a nice Amazon deal for you. Right now this Hornbill Fingerprint Keyless Entry Smart Lock is priced at $329.99 and through 5/28 you can use promo code 80WH5EL4 at checkout to save 80%. That makes the final price just $66. Here is the link to get yours:
Hornbill Fingerprint Keyless Entry Smart Lock – only $66 with promo code 80WH5EL4 at checkout (reg. $329.99)