Its not just Grout, its all the high end new stuff, mahogany, plat ore, plat bar, even salt and tit are starting to drastically loose value. Granite it worthless these days also.
My thought is BB in the next 6 months will do a balance and alter Ali and fairy-tale resource buy up to 90% at a guess totally remove granite and exo from lower level adv. They seem to go the easy option each time.