I think it's hilarious people still get bent out of shape over undercutting. The marketboard is not akin to walking into a retailer who has the same prices. It's more like being at a *gasp* market with people selling off their goods at the prices they choose.The value of an item is only decided by how much people decide it is worth. If the price set is higher than what the decided value is (which of course varies depending on person, timing, and needs), then prices drop. If the price is low and the determined value is higher than the price, that's when people stock up and hoard. We see this in our real lives in some cases maybe at the grocery store, but generally, we're pretty sheltered from it. Retailers have their prices pretty set. I think people need to pull away from that mentality and realize that we do not have personal store fronts set up on the MB.
I, for one, will not stop undercutting. I have found that I have made my hundreds of millions of gil by moving more items at a lower price. Yes, I will undercut by a significant amount because it's more important for me to sell an item and make some profit and have that spot on my retainer open up to sell and make a profit off another item I know will do the same.
Likewise, I never get upset over someone undercutting me. This is the way the market is set up. Yes it's disappointing when I miss a sale on a i110 item, but there have been many times where I just put something on the MB and it sold. It goes both ways.