Nice to see you here, Anachron.
I have a question for you about this. I think I found a way for this to sell items without adding a module or some sort (haven't tried yet and so am still skeptical), but I just noticed that once I picked up items, I could always throw them out, but could never sell them. I'm assuming that having an unit outside of the system would be able to do this, but if someone wanted to do that, it becomes a little more tedious than it should be.
Having a module to sell items and having it implemented into the UI window would be great for those using it. If I do use this, I will most likely only be using the UI window for storage (but adding equipment is tempting).