The only way higher prices on the wards can be construed as a loss in wealth would be if you only purchased items, and never sold them yourself. If you sell any items to another player in 2.0 the higher prices just balanced out the loss you experience in purchasing other items.

In the player driven economy the price of items is not a one way street. Higher prices do not equal a loss in wealth, unless you willfully choose to only consume items and never produce them.