Why have several items crashed significantly in price?

Dexterous prayer scroll, Anguish (maybe makes sense due to Rupture, but it's consumed to make it?), steel cannonballs, DHCB.

Why are these (seemingly disconnected) items crashing? I know all affiliated with range, which is just a coincidence, I just don't understand why the market is crashing so hard for random items all kind of at the same time.

Bot dump?