so I visited one of the larger wood stores in Seattle this afternoon looking for a little Swamp Ash to add to the roof rack for my trip home. Nothing to be found
I take a few moments to talk with the store manager, and he notes that he pays extra to have all of that 'useless lightweight stuff' removed from his order when it's graded at the factory.

he said he needs consistency in the wood densities he sells
take a trip a few months back when Larry Davis (Gallery Hardwoods) noted a recent delivery he received of Swamp Ash. IIRC Larry noted that he paid extra to receive a graded load that was graded for its light weight
seems like the lumber factories are chargin extra to both clients for the same simple grading process.
thoughts?
all the best,
R