If you happen to choose the official Sony Sharp Shooter housing, that will boost the price up $15, which basically turns out to be regular price if bought separately. However, there are three other third-party attachments to choose from, giving a nice variety to the selection.
Again, these peripherals are only the Move housings, and do not include Move controllers.
Lastly, putting down a reservation on any version SOCOM 4 will land you a SU90-S Shotgun which, sounds quite deadly.
Walmart.com has all the details, so shoot over there and pick your gear!