If you are following a recipe that calls for the addition of xanthan gum, DO NOT add it. You already have enough xanthan gum when using this blend as your gluten free flour source.
Where to purchase the individual flours at the best price:
I ALWAYS buy my individual flours on Vitacost. I buy these items in the Vitacost brand because it's inexpensive and always great quality. They FREQUENTLY have 10% off or even up to 20% off sitewide deals available. This is the only company I stay on the email list for because I don't want to miss these deals.
*I have no affiliation or contract with this company, I just honestly love their prices and products and have exclusively purchased these ingredients from them for years!