I have searched and searched and the best deal I can find on blanched almond flour is the 25 lb. bag/box found at Honeyville - http://shop.honeyville.com/blanched-almond-flour.html
Yep, it's expensive...but it comes to about $6.36 per pound if you buy the 25 lb. box. If you can find it cheaper somewhere else, let me know!
We've been very pleased with their flour. Nice and fine.