Amazon has the HDX Retractable Utility Knife with Rubber Handle and Three Piece Locking Blade for $2 (Reg. $7). Free Ship with $25 purchase.
6 in. Handle with comfort grip
Blade locks in place, retractable blade
Includes 3 extra utility blades - can be stored in handle, replaceable blade
3-Position locking blade
HDX grey and orange style