well i suspected it for a longer time and i dont know on what scale its going on but it seems there are quite some dupes running around.
search for skorns with crit 196 ls and str on the EU there are 4 identical on the ah with the same pricing, seems like whoever is doing it does not give a shit (and i doubt these are external rollbacks). Either blizz does not care or just has no idea how to fix it. is is obv. not the only reason for gold not selling, but we had a really sudden decline from gold selling in 30 minutes tops to gold taking 30h+ to sell, must have been a few weeks ago and seemed way to sudden to be explained.