Elb is correct... just do the math.
PFS before 25 diamonds then frequent +100% diamonds so 25 / 2 = 12.5 real pricing
Now, assuming we get the same thing as Euro, 19 diamonds straight up. 19 real price.
They didn't lower anything. Math ftw... no tinfoil hat needed. Maybe I just need a fuzzy pink hat to make 12.5 > 19...
The cost of Purified Fusion Stones (puris) and Arcane transmutator charges are at the foundation of the economy, since they are critical to statting armor and tiering up armor and weapons. Can't argue with this math: certainly the stars never aligned right by design (puri package sales at the same time there are double dia sales), but like a poster said, one could time it to make the system work. Patience was rewarded. Can't say it will be now.
The price increases for permanent items is, because they are permanent, irrelevant in the long run. The price increases for chests is rather significant: Puri PACKAGES stack, but individual puris don't, so the need for large amounts of storage if sales are confined to puris and not puri packages goes up. I can't remember the poster who anticipated a cost increase in house energy, but I believe they are correct since house energy determines how many pieces of furniture are purchaseable and potentially placeable, but the house size determines how many are actually placed.
Runewaker and Frogster have something that a REAL sales person only dreams of: they have a base expense of servers and bandwidth that hard bargaining can render reasonably constant, and have a personnel cost that is relatively fixed, yet sell something that is infinitely reproduceable (bits) that is virtually nothing for something (euros/dollars).
I am sure they are patting themselves on the back on their "cleverness" in being able to sell nothing for something, but they are not REAL scam artists, who would quickly see the value in keeping the marks happily exchanging nothing for something by regularly selling them twice or thrice as much of nothing for the same something.
Goodness, they're not good at ANYTHING, are they?