i would highly recommend going to MFS Supply for the cheapest KW1 keyed locks there are. in addition to this sell, dirt cheap lockboxes and have quarterly sales, lastly they also sell padlocks for a dollars.
ALSO! they get cheaper as you buy more in bulk as well, the current prices if you only buy them individually in small amounts is:
$4 deadbolts BRASS ONLY
$5.50 knobsets SILVER AND BRASS!!!!
$40 grade 2 commercial lever handle MEH, not that great
$12 lockbox
$2.40 padlocks
before anybody goes too crazy about paying, I WANT TO WARN EVERYONE, that this is by no means a great product. they can be rekeyed without falling apart but, i can snap these things open with my snap gun in one try. also much of the interior of the lock is plastic, and they use this messy grease that gets everywhere.
i think they have a flat rate of $20 and if you buy like $450 worth of their crap, they give you free shipping. however, on special quarterly sales, they give free shipping at only $200 worth of shopping.