The oak trees at the top, I bought the actual trunks themselves for like $2 or $3... then ordered the leaves from direct service (another $19) still a lot cheaper than most. And now I have 3 of the big oaks.
I accidentally ordered 2 of the backpacker with beaver and fallen tree. I decided that was okay though since I like that tree... I now have 8 or 10 beavers. It's okay.