Should you blame the government?
Or should you blame the country of Mcb?
Och yes, blame Canada, blame Canada
Sorry, couldn't resist after getting a board warning for something completely unrelated to this post (like being insensitive when it comes to nuclear disasters)
Wouldn't worry about it either, he'll probably edit it out anyway (censorship) and maybe I'll be born in the next life as a sensitive guy driving a blue frickin Prius
Now back to you
Looks like you're up against someone intent on destroying (or taking over) a market that was already struggling with an oversupply of crafters.
Are you sure he cancels his posts? Cause if he is, you should realy mess with this guy by undercutting with ONE twelve-hour auction every time.
He's losing considerable posting fees on that wall of his every single time
So go for one-copper undercuts and watch him lose gold.
It will take time to run him dry as his ability to drive everyone out depends on the size of his pockets.
Try to lower the price down to the point where he'd be better off vendoring the stuff, if he undercuts that, go on a shopping spree