As one of its daily deals, 13Deals offers this WordLock Stainless Steel 4-Letter Combination Discus Lock, model no. PL-072-DL, for $5.99. With $1.99 for shipping. That's the lowest total price we could find by $7, although we saw it for $1 less in April (since expired). This 70mm rust-resistant lock can be set to any 4-letter combination and features a deadbolt locking mechanism and resistance to bolt cutters. Deal ends today.