The addon I use to sell my junk (grey) items is AutoProfit.

If you don’t want an addon, there is a macro that does the same thing.

/run local l; for b=0,4 do for s=0,GetContainerNumSlots(b) do l = GetContainerItemLink(b, s) if l and select(3, GetItemInfo(l)) == 0 then ChatFrame1:AddMessage("Auto-selling " .. l);ShowMerchantSellCursor(1)UseContainerItem(b, s) end end end