$50? That's high.
You can get them from The Alden Shop in San Francisco for $35.
I'm pretty sure they are Alden branded Woodlore, and you can get them from Woodlore for $25
You can also pickup decent trees at a Nordstorms, if there is one near you, or at Allen Edmonds.
And yes, buy the trees. You just bought some nice shoes, take care of them.
Puttind AE trees in Alden Shoes wouldn't be bad for the shoe? Or should I just order Woodlore trees from Amazon?