Alt A has 9 lb pils, 1 lb.munich. ALT B has 9 lb Pils, 2 lbs. munich and a little black malt, Alt A was mashed at 152 or so for 75 minutes to see if it helps. The OG was a little higher, but not the .1050 I was hoping for.
Assuming you're at about 1.048, that's around 65% efficiency. Do you check your mash pH, and/or treat your water? For a relatively light beer it wouldn't be unusual for tap water to pull the pH out of range and contribute to poor efficiency.
Organics are not that much more expensive IMHO. Who said saving the planet would be cheap?
I'm not sure I'm willing to grant the premise of your question.