This is exactly the reason for my QQ - IS prices never were fixed since CH2, and 3 chapter later we still have 125 dias ON SALE 1M XP or TP orbs that now don't do scratch on XP bar. That is just small example, yesterday sale for pet items is another thing that should be fixed...
People get turn away from the game because of overpriced IS, and now even worst, people who used to support the game are (rage) quiting or thinking to do so... Folks who could do shit about it are taking way too much time IMHO... and eventually it will result in either GF selling the game (might help, doubtful) or close the game...