like i've said, he bought the potash, etc from his previous server. for having gsm, ltw, and wvr, he has access to innovation, waster not II, and careful synthesis II which is enough to HQ tier 2 gears with some consistency, hence why he has some NQ items for sale. with the ridiculous price he places such as 555,555, he's messing around and like u've said, that it would cost 594k for 18 potash, its around the ballpark that he just want to recoup back the gils he spent on the tier 2 mats from his previous server.

i was suspicious at first when i saw a guy doing the same thing in my server, but his tactics won't last long and since ilvl 70 items are now bindable even in low mobs, meaning they can't be sold back in the market, the market will go back to be 'normal' sooner or later.