I saw it at the Walmart on Rt 38 in Lumberton, NJ (mid-Jersey).
Someone also saw it at a Walmart in NJ near the PA border, along I-78.
Autobarn in Mineola (Long Island), NY just started carrying it too, same price as other M1. They have an online shopping site but it costs more online.
Haven't seen it at the Long Island Walmarts yet but I'm sure it'll be in stock soon.