Yes, you absolutely can. A PC game costs the same as a console game. They're games, for fucks sake, just on different platforms. There's no reason they can't be compared.

Even if we don't compare them to PC MMOs, there are still a bunch of console games that sell cosmetic items that cost the same or more. I've already pointed out a few to you, you're just being stubborn and refuse to accept it.

Edit: in fact, comparing it to an MMO makes Destiny look better, because most MMO's have a monthly subscription. You're paying 50 to 60 for the game, 10 to 20 a month, 20 to 30 per DLC, and then another 20 for a fucking horse. With this expansion for Destiny, you get 3 emotes, 3 shaders, and 3 class items, for the same price as one mount, and all you had to do was buy the game and the TTK DLC.

Maybe that's why you don't want to compare the two: it goes against your desire to bitch and moan about what are actually pretty normal prices.