Every year from events or updates new items coming up, and sometimes happens that the items to start just in a price and increase everyday and others just starts really expensive and became cheaper after some time.
The last update appeared new weapons and set the Phantasmal Axe was one of the most expensive items the first days was around (25kk) and now after 3 months the price of this item is around 2kk+
Same happens with the Plushies dolls from Orcsoberfest when they appeared they prices was around 3kk and after some hours the prices just decreased considerably.
So by saying this how the prices works? And how to know then is the best time to buy a item after it appears?