I often craft and sell, even if i am not a dedicated crafter.. when i am undercutted by a gil i feel a bit of irritation because i think.. could you (that undercutted me) go down at least of 1000 gil?
So i started to STOP buying the lowest price item that i see on the market of i am on the side of the customer.
If i Need an item X and there Is One at 9999 and One at 10000 for example i buy the 10000 One.
Ah, and i identified a bot too in moogle, sometimes It sells something i Need (even on other worlds) but i refuse ti buy from him.