I am not affiliated with any company, but there are a few companies that I like to order from. They both carry a very nice gluten-free light buckwheat flour and have very good customer service.
Delicious Gluten-Free Baking
with Buckwheat Flour
by Michelle Brewster.
160 pages of tasty, healthy,
easy-to-follow recipes, lavishly illustrated with color photographs.
Available for $24.95
Purchase now through Paypal with your Visa or Mastercard.