So before any riots, this is specifically due to Apple increasing all prices in their stores by 20%. Plarium didn't actually do anything to cause this price increase.
Case in point, there are no price increases as of yet on my Android devices, although I am told to expect that Android will raise their own store pricing to match Apple Store.
To keep their pricing the same as before, Plarium would have needed to reduce their pricing to make up for Apple's increase. Maybe that is something people would expect, I don't know, but lowering your prices cause a middle man increases their pricing seems a lot to ask.
Personally I am a very very low spender. I bought the first Bolster Forge Pass, I thought it was worthwhile. I didn't get the second one. The Warrior's Circle packs usually look great to me, but I don't get, focusing on snagging F2P resources. So while I'm not #5, I'm fairly darn close.