I have about a million gold right now, and im trying to figure out what to do with it. I don't really intend to buy gear with the new expansion on the horizon, just want to make more gold before it comes. Everyone says wait for locked prices to dip down, and sell when they are high, but the last time I saw the prices dip under 9k was Halloween. All ideas are appreciated

Also, would a grim egg be a good investment? they don't seem to be raising in price.