Don't shout at Nabi for the market changing, the market fluctuates on an hourly basis.
They made a lot more stuff affordable to give the game more of a hook for newer players.
Play More, Afford more items, Look cool, Keep Playing
Play more, Gain Qi, Go up tiers, Access to more items, Keep Playing.
The fact they've added a hook is excellent, it didn't have much of one before.
Please learn to understand how markets work before shouting at a company who had nothing to do with it.