It has taken awhile, but my local farmer's market got my lactose in. I saw they stocked NOW products, so I asked them to order some lactose. Because of some missteps on their part, it took awhile, but I got it-- $3.89/lb. I plan to add the 11 oz I needed at kegging for my cream stout.
I also noticed in the bulk bins some flaked barley-$0.79/lb
and some flaked oats, didn't get the price.
Point of this, those who don't live near a hbs may be able to find some ingredients at a market of this type. Don't be afraid to ask for special orders, either.