TLDR: Effectively bought keypad dead lock for $15 and electronic handle lock for $80. Both work great.
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Sometimes you can find great deals on keypads. I have two. One for my basement rental and one for my front door. If you do AirBNB or something more frequent, it is a little annoying, but you can remove and program a new pin in under 2 minutes (for example, the last 4 of the renters phone number).
For my front door, I bought
https://www.amazon.com/gp/product/B00R7JVFCE/ on Amazon Prime day. It was on sale for $55, with an extra lightning deal of $15 and an AMEX promo of $30 cash back if $60 were spent using reward points. Basically, I added a $5 item and paid $15 (with rewards points) for a lock and pair of gloves. I am happy with it. There is a physical key in case the batteries die and for peace of mind. Relatively easy to install and has an autolock feature. So if I unlock the door, the bolt will lock in 45 seconds for me, automatically. The time is adjustable. I highly recommend it. The only potential issue is if you are the type of person who locks the door knob (or accidentally locks it) and deadbolt, you would still need a key for the door knob.
The lock on my basement fixes that solution with
http://www.homedepot.com/p/Schlage-Camelot-Satin-Nickel-Accent-Keypad-Lever-FE595-CAM-619-ACC/100608049 . It goes for $120, but I got lucky on the price match policy. I asked if Home Depot had a price match because I saw a similar one online for sale. The sales lady asked how much and I said I think $80 (to be honest, this was an honest mistake. I was searching through dozens of locks with similar features and styles and happened to get it confused with another lock). So she matched it at $80 without seeing an ad. Looking back, this particular model was $105 at the cheapest. It can hold 19 different numbers, to include one use pins. The lever handle can be installed either direction and it has a key or combo functionality. It works great and I think looks more professional than a round knob.
I was originally set on buying a wifi/remote phone lock, but discovered the combo only locks were much more economical and served practically the same purpose. I have a one time pin installed on the front door in case anyone needs to get in when I am away for emergencies/anything that I could text them just as easily as if I were using an app to unlock the door for them.
Just my two cents.