while I've never bought from them or stopped to see what they charge I recall there being bulk piles of wood listed for sale next to Ressler's collision center on the strip in Mandan and also on S bell st behind the tombstone shop by the municipal ballpark. I also think the landfill sells bulk wood but you would have to cut and chop it yourself. Hope that helps let me know if you find a good deal I might be in the market this fall for some firewood.