I actually started playing Warframe a couple months ago and have been pleasantly surprised by the game's level of quality while still having a relatively player

I actually started playing Warframe a couple months ago and have been pleasantly surprised by the game's level of quality while still having a relatively player-friendly business model. I've only spent around $30 and that's been more than enough (along with a very mild grind) to get me through a large chunk of the game's content without feeling pressured to spend more. In most mobile style games, you may as well toss your $30 into the wind for all the good it will do you. That probably won't be enough to get you the one card/hero/item/whatever that you actually want, let alone allow you to be competitive within the game.