Apparently every Target is getting 1 case, to go along with a big standalone cardboard display that has other stuff on it like the 3.75" figures, Wampa set, etc. I saw this display in the boy's clothes section, in electronics, and right next to the SW aisle, so YMMV.
Basically you better hope you have more Targets in your town than you have people interested in buying 4-LOM, or you are going to be SOL.
Seems like Walmart has no use for this wave, like the Baze/Chirrut wave they never carried. Weird.