I love it when people undercut the current trend by 50% in desperation to "sell now".

I grant their wish, then relist their product back to the current trend and enjoy the (basically) free Gil.

Funny thing is, this happened to a friend of mine. He listed at 800. Undercutters went 799, 798 etc. So he listed more at 500, 499 etc. They answered by pulling their 799s and relisting at 450, 449. He bought up/pulled everything under 800 and reposted all at 800 and sold.

There ensued a slew of cursing on /shout from the "aggrieved" undercutter. It was glorious.