And, if all else fails and you either don't have a local shop or the local shop doesn't carry an alternative, True North Precision Paints are, I'm told, nearly identical to Model Master. You just have to order them online...
As I said when the initial "Woe is me, Testors is going away" posts started popping up on the various forii, Testors didn't have anything in their line that doesn't have an available alternative or alternatives that in some cases are better and/or more economical, it just means that you'll probably have to buy it online. Seeing as "the local hobby shop" might not exist for many people, it is the way many of us get our hobby stuff.
Not affiliated with True North, just passing on what I've heard. I'm an acrylic user myself, and have had to become familiar with alternatives to the Acryl line...
https://www.truenorthpaints.com/