I do understand why people complain about this things, I mean you:

Buy the game
Buy expansions
Pay subscription

Is a good investment but in top of that also a cash shop full of cosmetic/mounts/glam. With many updates an new items..not only that but items go up to 30.00 or so? (Correct me if I'm a wrong).
I am an adult an I'm not rich but neither poor, in almost 7 years playing the game I have never buy nothing from the cash shop, not even fantasias, an never will, is OK to be greedy but not excessive.
Is not SE foul.. they are just a business an they doing what they suppose to be doing...making money..
If someone is to be blame is the player base that keep buying..an yes prices will keep going up because why not? Same people are gonna keep paying for it.
This is just my personal opinion on how I see things.
ps: please someone post a meme of a very rich guy.