It definitely has. Now that RCers with 70+ make as much money as 82 rcers do with 2x astral, both nats and astrals will go down quite a bit. All in all, 91+ rcers got completely hosed. Don't think Astrals will go down, they will even go up a bit more at start, because people who used to craft astrals will now move on to natures, making the amount of astrals crafted, and, with a similar demand, astral prices will go up :) Eventually more people will go back at astrals, but the people closer to 91 will still stay at natures. So I predict, in the long run, natures will fall but we will see a price rise in astrals! Right now, 2x astrals is still more profitable than 1.5x natures. The two runes are related (both crafted 2x by high level rcers) so they will fall together.