Haha, nice find. I suppose that's one way of funding a Play Now! character...
Exactly. It beats selling dirt, and it's only slightly more ridiculous. The best part, which was a new discovery for me, is that you can (I)nteract with a backpack to fill it, just like a waterskin. Only it hold with 100 units. (Note, it must not be inside another container). Of course it's still slower that robbing towns looting abandoned fortresses, but looting towns is too easy, and this was a new world.
Yep, I've done this before. They also buy blood, so you can burn yourself slightly, pick up your own blood, and sell gallons of your blood to the shop keeper.
Wow... That would have made the story much creepier.