When do Horde warriors replace their Axe?

I realize that there some good BoE weapons in the 40s, but there’s a trade-off there since you have to consider the value of the gold you are spending against how much better than WW axe that weapon would actually be. Obviously, this varies by economy of the server and your individual financial situation (whether it’s your first char on the server or you have a main to support you). How common is it for Ice Barbed Spear to be the item that finally gets rid of the WW axe?