Now and Laters.
These little shits used to be everywhere! Next to the registers at liquor stores, quarter candies from the ice cream truck, and who can forget a now defunct all purpose store (think Walgreens) called Drug Emporium. Back in the '80s, you could score a pack of 48 of these delicious one inch squares for only a few bucks at your local Drug Emporium, then sneak them into the movies in your G-ma's purse.
Nowadays these aren't flooding the candy aisles of any grocery store. No, but you can find them on Amazon and various other sites that sell just about everything.