Take a look at the screen cap
There’s a heavy buyer right now trying to set the buy price at 3,780,000.00 ISK with multiple orders at 22,400. This is what would be deemed as a “rational” forced offer, because the volume of sellers has responded and has ticked up slightly. But it’s now a question of the matter if seller’s volume will meet the demand of almost 224,000 PLEX. If not, either sellers are holding out or are exhausted of supply to meet the demand, which in either case will further drive prices upward.