I understand the pain. Any time I see a price that is stable, if I make even two of that item to sell the price drops by about half in the course of a full day. I personally don't want to have to micromanage my items on the market every hour. I don't even undercut, I just match the price of the lowest item for jewelry or gear. Its why I've given up trying to make money by selling items like I did near the start of the game.

Its just too much work, and the price ends up less than the value of even just the cost of shards often, let alone the materials to make them as well as any profit margin.