In my opinion, Mod must have policy to make sure the price not down anymore. Day by day when amount of PRIV distributed, the price will have down step, 4 weeks ago, PRIV still have price 1000sts but now it just have 400-480 sts, and maybe with a lot of PRIV distributed from AD11 to A20, the price may be dump more than now. I think with people bought their PRIV, they can't join Airdrop anymore, because they are dumper, not a real holder