I visited the Lexington Park, MD store and snagged 3 boxes at $19.97 each (the sales lady said there was a lot in the back of the display case, but I couldnt see exactly how many due to the angles), but the register brought up a message along the lines of 'Over Flr Limit, approve?' when the clerk scanned all three. She didnt know what that meant and thought it was my credit card (which took like 2 minutes to approve, we were having internet problems at my work all day) being over the limit, but I'm no where close. I guess the max is one or two value-packs per customer.
They also had .40, but I didnt see any 9mm value packs.
This is also one of the Super Walmarts, with an eye doctor, pharmacy, etc; I think their manager's pretty gun friendly (or at least realizes being 5 miles from a Naval base means he could sell lots of guns & ammo) because the gun and ammo displays are always 100% stocked unlike the Walmart near my house where 50% of the time you gotta wait for stuff to be brought out from the back.
Kharn