Well I went to Wal-Mart and went to the aisle where they had all the TFs displayed and I didn't see MP SS there, but the story doesn't end there. I went ahead and picked up Final Battle Jazz and Arcee (Still can't find '08 Camero BB damn it).
They had 20th Anniversary DVD MP Prime, but he was still at that $70 price point so I didn't touch it. There was a guy looking for Ultimate BB there and I didn't see any around so I told him to try Toys R Us or Wal-Mart on Southern.
So I gave up, thought they ran out and went ahead and cashed up Jazz and Arcee, but then I saw Ultimate BB on the top shelves in a different location. I thought to myself that this must also be the case with MP SS so I went through all the aisles in the area looking for MP SS and sure enough, they were put up on the top shelves. I snagged 3 of them and cashed them up and headed out. I was a happy camper