Wonder if Battleship had anything to do with some of the lose.
Last year was a horrible year for Hasbro. Obviously they took a hit for delaying live action movie G.I. Joe sequel. Yeah they took a hit with Battleship as well, but the other contributing factors were two horrific gimmick ridden lines of Transformers Prime. The Deluxe line did alright, but the Voyager line crashed and burned hard with Megatron and Optimus Prime eating up toy shelves with their horrible gimmicks while later figures in Dreadwing/Skyquake, Ultra Magnus v. 1, and Starscream (who has since become much more manageable to find).
Hence why the new Voyagers are flying off the shelves for the most part (at least the Classics and Predaking are by me).