Pepsi drinking glasses were just another advertising giveaway back in the day that people are buying today! Most of them had some sort of cartoon character on them, but even the ones with just the logo are in demand. These various glasses go between $25.00-150.00 depending on character, quantity, and condition. They have a really good sell-through rate as well!
It would definitely be worthwhile to research “Pepsi drinking glasses” on Ebay to see the various ones that are in demand.
Hopefully you’ll find one at the next place you “pop” into!