Idea: Sup rune of Wilderness Survival at Rune Trader

I know, its probably a bug, but I couldnt find where to report bugs around here, so if any moderator thinks this thread is inappropriate here, plz feel free to move or close it.

Still, its annoying, I need a sup WS rune and its the only rune which somehow isnt available at the rune trader, look:

They're probably sold out at the moment.

It's just sold out. All the NPC traders get their items from players. So if theres a high demand and low supply, the item may go sold out.