Cream of tartar

[Jeanea]

Ok, I want to make bubble bars however most recipes I've seen uses cream of tartar. Im on a budget and this can be a pricey ingredient. Where can I buy this in bulk for a fair price and maybe free shipping?

 

[lsg]

The Chemistry Store has one of the cheapest rates, but the shipping is high. Try Amazon.com for free shipping.

 

[Obsidian]

I found it at Winco for $8.00 a pound.