Was duping fixed?

Something seems off about that.

Protection scroll should have inflated since as opposed to gm scrolls, mass amounts are used with 20s/aee/ees in perfecting weapons
along with other scrolls.

If it was patched then most of the dupers would have kept their scrolls, buy out those who still think duping is available, and wait for inflation.

Instead you have smegas with people trying to sell their protection scrolls at prices lower than the competition.

Or it's possible they think Nexon might actually turn proactive, and start banning people with clearly broken supplies of items. As such, they're trying to clear out their stock because having 20,000 AEEs, White Scrolls, GM Scrolls, etc. makes it kind of obvious.

Or they're just trying to clear them out before they get deleted.

Or they expect a new exploit to be found soon, and as such there's no need to care about being cleaned out.