If you need BP, Grafs has it the cheapest, I think. They're at
www.grafs.com - their reenactor powder only 11.95 - the 2 or 3F is 15.95 a pound. Last time I bought it , I got 20lbs to help with the haz mat fee of $27. That spread it out to a little over a buck a pound. Don't know what the " reenactor " powder is, first time I saw it. Maybe give them a call and find out.