While I have seen the occassional UBP since I bought mine, I did notice this same phenomenon at one Target in particular. I saw them on an end cap, at the back of an aisle one day, but then they were gone a few days later. There was no empty shelf with a tag saying "G.I. Joe Ultimate Battle Pack". It's like that Target put them out and then took them back. I'd like to think that they all got sold, which is good for future Joe vehicles, but I dobut that is what occured.