Dude, it's pretty clear that Yoshi-P doesn't want an economy because of RMT. They even removed some gill from some mobs I believe because they are terrified of rmt. Even if they added a few recipes or a few drops since everything is so easy and handed to everyone it will still be a lot of supply no demand. They need something rare and hard to get that can actually be farmed and traded to help. The problem isn't that players keep undercutting it's that everything is handed too you so nothing is "worth it" so they undercut because they didn't really have to spend a lot of time or hard work to get.