I am not a fan of Kwikset (or actually any Zigbee/zwave deadbolt), but for those that are, they are a bit expensive, usually running between $200-$255.
Lowes stores (iris) has the best prices (if you can find it in stock) at $199
For those in the market, right now you can get the Kwikset Smartcode 910 new for $159, but only for the next three days.
http://www.ebay.com/itm/231617945229?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649