Last summer during interviews, the Hasbro team was very happy with how the N-1 had sold, and said it was going to have the effect of more fighter-sized vehicles being offered. I think the E-Wing was an obvious result.
I saw the N-1 on shelf at Target, Go! Calendars and Toys, and a local toy store called Sir Troy's Toy Kingdom ( that is an all-out toy store my boys and I absolutely love that is trying and mostly succeeding at filling the hole TRU left.)
The N-1 is still available on Amazon as well, and hovers around regular price. If it dips far enough it might finally push me over the edge to actually buying it, but I am not much of a vehicle collector ( no Haslab purchases yet, the BMF is enough of a space hog for me.)