Lakanto brand is OK, but none are cheap. Sugar is cheap as you know, but you have to get used to the fact that these products are specially made.
Pure monk fruit is pricy but you're only using like 1/4 teaspoon vs a cup.
For allulose - the best price is this one, I use it in my jerky: https://www.amazon.com/dp/B0F2L717LV
