I just paid >$60/sheet for a pile of 19/32" 5-ply cdx plywood sheathing. They want nearly the same price for OSB.
The T&G 1-1/8" subfloor I paid ~$40/sheet for in 2019 is currently $110/sheet at the same Home Depot.
If you're looking to share some quality bitching time with a rando, go grumble aloud about the prices in the lumber aisles of your nearest store. If there's anyone around, I guarantee you'll find vocal company for your misery. I've never had so many conversations with Home Depot customers in my life...