Smart lock prices typically range from about $130 up to $400. The Yale Assure Lock SL with Wi-Fi and Bluetooth capabilities retails for $299, so it's certainly not the cheapest one out there but all of its capabilities can make it well worth the cost. There are many pros to having a smart lock that may end up saving you money in the long run, too. Consider that you'll never have to rekey your house or worry about lost keys or have to make copies of them.