Tatsumasa...

I cannot agree more. In the end, unles your fallback in a given market or item is rediculously high, mammoth undercutting does not change demand significantly. It may change individual buying decisions, but not overall demand.

The reason is that, because the AH is not advertised and, frankly, has an interface that forces you to know what you are looking for to find anything you want, players cannot see that there are shifts in the market. The is no Nordstrom's sign saying HALF-YEARLY SALE EVENT ON GLYPHS! STOP BY!

So, what you say is absolutely true... people go look for the Glyph of ... (Less fail) and either decide to buy or not. In this respect, what drives the demand (looking for the glyph because I hit level 75 and need 3 more) is complete inelastic with price.

Undercutting by dumb margins in these markets is not smart.

Now, in markets like ores, herbs, cloths and other raw materials where people are scanning them to see opportunities to craft or otherwise prospect the materials, undercutting can be EXTREMELY powerful.

I laugh at the undercutters. They craft, sell, and lose their shirts. When they shift off of the glyph in question, I just post fallback and count the coinage.