Perhaps we should stop trying to reasonably set people straight about this. Instead, level crafts for 2.0 and when it hits, sell everything for the new 10%-ish value.

You'll look like you're undercutting the market, but you'll actually be selling it for the same 1.0 value in 2.0 currency, and people will compare your item sold at 20k against the same item sold by everyone else at 200k.

You'll come out with the profit and you'll make the first steps to stabilizing the market.