Walmart wants $5 for 113g.
Costco wants $5 for TWO FREAKIN' POUNDS.
$0.32/loaf for yeast at Walmart.
Assuming you bake more than 16 loaves over 2 years, you've paid for the Costco yeast.
And that's if you buy bulk. It's like 100x stupider to buy the 3 pack.
So as long as I bake one loaf of bread a month, I'm ahead of the game even if I throw out 85% of Costco's pack.
Or I could vacuum pack it and freeze it and have it last probably forever.