
cheap trees...
Yes, most of the stuff in miniature stores and train stores are way too expensive. I found some big bags of evergreen trees from a German company in a train store in Eugene Oregon that were affordable. Haven't seen any similar great deals on deciduous trees, though.
Michaels craft stores in my area have been having 40% off sales on Lemax Village stuff, including evergreen trees and leafless birch trees. I picked up two sets of patches of birch trees on little stands that came out to $1 per patch of birch trees. There were big bags of evergreen trees available also, but I've already got the bags of evergreens from the German train scenery company that I bought years ago.
There is a chain of stores called "Dollar Tree" in my area which has packets of one or two trees for $1 per packet around this time of year.
If that's still too much to spend, or if those options can't be found, then you could try making trees out of wire, wrapping with tape, painting, and gluing something on to look like leaves. The train store that I visited in Eugene had bags of tiny wood chips that had been dyed green. Those look more like actual leaves than the lichen or scouring pad material that's often used.
Warren B.