Active or Instant Dry Yeast (Amazon Fresh brand) 0.75 oz, 3 pack $0.48; Shipped with Prime

[mtnagel]

Instant - https://www.amazon.com/gp/product/B0BR8K3F38?tag=phtwllt-20
Active dry - https://www.amazon.com/gp/product/B0BR8KQ9RH?tag=phtwllt-20

If you don’t see that price, check the other buying options. These are normally ~$1.14 to $2.50 for generic or brand name at Walmart/Kroger. This is almost half the unit price ($0.64/oz) vs buying Kroger 4 oz jar ($1.17/oz). You can find cheaper unit price on Amazon ($0.62/oz) but you have to buy a pound.