Why do people do this on the market board

[Gralna]

I figure someone could use it, so I throw it up on the market for the default price, or even lower. Especially when I am doing my ventures, if it's something I find worthless, I just go ahead and put it up cheap. I am sure someone needs it.

Same, even if it's worthless to me, I'm sure someone could use those 3 aldgoat hides I already have a full stack of on my retainer.