Sams Club now has the PS4 Knack Bundle available to order by clicking here: http://www.samsclub.com/sams/ps4-bundle-extr-cntr-w-knack-game/prod12360206.ip?
These systems sell out quick! Be sure to check the link above for the latest availability.
Helpful links: Xbox One Tracker and PS4 Tracker for the most recent inventory changes.