Amazon has Stevia In The Raw Sugar Substitute, 2.64 Ounce Jar
after $1.25 coupon for first-time delivery via Subscribe and Save. Shipping is free
Comes out to about $0.031 per serving (1/2 tsp).
$4.07 with 5 items, 15% discount.
Buy Now [amazon.com]
This is 1:2 Stevia to sugar, or twice as sweet as a comparable teaspoon of sugar.