>>7268863Despite having different SKU/Item Numbers (not the UPC; the company's internal numbers) from the other similar Walgreens exclusives, Thing's is grouped together in WG's point of sale system with them. So, when the site says a store has 2-5 available, it's most often than not ain't Thing, but their other exclusives (Sue, Reed, Johnny, Silver Surfer, Medusa).
I think this was the same before they started doing FF-related characters. Yellow DD was in ML Spider-Man's SKU group, Black Ant was in ML Avengers, etc. Think FF started getting their own group with Namor, but I never saw him on the site; same with Punisher (though Frank was probably grouped in ML Spider-Man). I think only Agent Venom had his own SKU cause he was the very first. I remember looking up store locations on the site for him, and every store that said he was available there, actually had him.