How do people make so much money?

[Sativa]

Here

[spoiler=Craft Short Heavy Barricade  787xp]
Recipe
50 x Sturdy Wood
30 x Hardened Metal
15 x Strap
10 x Armor Plate
10 x Bone Dust
50 x Wood
8 x Processed Wood
6 x Construction Tools

Product
1 x Short Heavy Barricade
[spoiler=Stats + Picture]

Hit Points: 1800
Useable By: Siege Engineer
[/spoiler]