Sorry all, I do not believe I will make it today. I am helping out my friends raise money for a summer mission trip. Good luck on the market topic! Personally, I have not really experienced undertrading in the market as of now, but i do agree with ABP that there needs to be some sort of consequence system in place. Wish i could be more detailed/helpful, but since i haven't experienced it yet, I haven't given it much thought.
Although, someone DID underpay EliasRipley in the End Market for a dragon head. they paid 4 diamonds when it clearly says 4 diamond BLOCKS. I know he's not on much anymore, but I figure it should still be taken care of so it doesnt happen to someone else.