Prices are about standard as far as MMOs these days come. inflation is a bitch
I'd disagree, there are examples such as LoL and Warframe above that generally offer much more for less. I disagree in this being the standard, and if it can be considered a standard then it's a standard that does more to harm the players and the game than to help them. If the pricing is unjustifiable to an average user it hurts their bottom line, and we should give them the feedback to let them know there are better options.
The exceptions prove the rule, and LoL? Really? Their ultimate skins cost more than the 30$ one we get here. Not to mention, moba vs mmo, one you are using around 100 diff characters, this is just one character.