I can see how people get annoyed with the undercutting. Like someone mentioned before there are ways SE can help the marketboard.

Personally the only time I undercut in ways the OP are talking is if the item before me has not been selling for days and Im trying to get rid of it. Or sometimes im in that cheerful mood and give some of the new crafters a chance to get something really cheap to help them out. And when I do the later I dont list a bunch of items its usually just one, because of the obvious.

But the way some people undercut. They dont even make a profit, all they are doing is breaking even or losing money. Because of rediculous amounts of undercutting Mastercraft demis were down to 215k before lol.. I also think people honestly dont even look before placing stuff up /shrug