Most of you who are saying that Pulsfire Ezreal is too expensive haven't stopped to think about one very simple thing. This is a THEME, not only a SKIN. If it were a skin only I have no doubt it would be 1800 just like the other "legendary" skins. But you are getting a banner on your profile, a summoner icon, a skin that completely changes the way the hero looks, and new spell effects within the skin. And all of this, if you purchase within the first 4 days of release, only costing you 1600 RP which is less than any current legendary skin, I honestly don't see your beef.
Sure, 3200 RP is expensive, but it's on sale for 4 entire days, why not buy it then if you want it? Besides, 3200 RP isn't that expensive for all that you get. If you don't think 3200 RP (or 1600 RP for that matter) is worth what you're getting, don't buy it, simple.
And as to the point of "you can't raise prices because quality increases," that's garbage. When you go to buy anything do you always look for the cheapest you can get away with, or get something that costs more but is better quality? I know that comparison is a bit of apples and oranges, but the same logic applies. It takes Riot longer to create these higher quality themes and legendary skins, why shouldn't they cost more? Why shouldn't PFE cost more than anything else since it is the most advanced, most artful, and best quality of any skin put out before?