Baking yeast packets at the supermarket: $3 for 3 0.25 oz packets. $64/lb
Bulk baking yeast: $2.29 for a 1lb brick. $2.29/lb
Packets cost 28 times as much. Yipe.
Smart and Final sells packets right next to bulk 1 lb containers. The packets cost $3 for 0.75 oz, the bulk costs $4 for 16 ounces. You do the math. Buy the bulk yeast. It freezes perfectly well after being opened for at least a year (I haven’t ever had to freeze it longer, I use it)
Costco, Sams Club and similar stores also have the 1lb brick of yeast. If you make more than 3 loaves of bread this year, it’s worth getting the large size. With my breadmaker, I make about 30 loaves/year.
Rainbow also has open bulk yeast. Yeast generally lasts at least 1 year in the freezer… except for the yeast I got at Rainbow. I’m pretty sure it needs to be refrigerated and not frozen because twice now I got yeast there, made a loaf, froze the rest and the yeast was dead after. :-(