Trying to set up some price ceiling is bullshit, we want free market! With ceilings i would never be able to make the 2 million i made, buy every gear i wanted, non-loomed (not that big difference tbh), i can play in full plate if i want till i stop with warband probably.
When i start to run out of money, which i doubt, ill just retire and sell a +1 kuyak for 350k again
Anyways, OP, i think you would better spend ur time ingame farming money than trying to make others sell looms for cheap, not to speak that you can perfectly well play without looms aswell...