Trade Prices Dropping

[this user was banned]

I recently came back after a long break and noticed that since Velious was released prices have gone down.

a FBSS once sold for 12k is now selling for 4k and fungi tunics are now selling for 40-45k

Is this a result of the expansion loot hitting the market market in full force making other gear obsolete and less valuable in the process, a result of deflation now that the RMT market took a hit, or something else?