easiest way is to make a macro:

/script for bag = 0,4,1 do for slot = 1, GetContainerNumSlots(bag), 1 do local name = GetContainerItemLink(bag,slot); if name and string.find(name,"ff9d9d9d") then DEFAULT_CHAT_FRAME:AddMessage("Selling "..name); UseContainerItem(bag,slot) end; end; end



Note this macro can also be used to trade greys to a secondary char, just open the trade with them and hit the button and 6 greys go into trade. just dont hit the button if you're not trading or selling or you'll equip a bunch of greys