Well, I fished up 5 stacks of moat carp the other night on my fisherman, and I was pretty happy stoked to get the money back cause I almost have enough for Astral #2 (Final Ring before Serket, har har).
I go to my box...None sold? Run over to the AH and check the sales history...3500 ><
Now, I've seen a lot of things fluctuate in price, but I've never seen Moat Carp flucutuate DOWN in price before? People are going to buy moat carp by the truckload A) for crafting, B) for Lu Shang's quest, there is absolutely no need to undercut on Moat carp, they will sell in one game day (as long as everyone keeps the price steady) every day. They used to sell in less then that.
I realize that it is not a seller's market in this game, but that is totally besides the point, think before you undercut, in 5 stacks, you're short changing yourself 2500gil, that adds up.
-Tweed