Totaly not pay 2 win, you can farm everything ingame, you start out with 50 plat, you buy a warframe slot, some weapon slots, work yourself up from planet to planet, farm bosses to get parts to build a new warframe, with relics you can open Prime warframe parts and weapons, when you got a set build it, there's your free prime warframe, same with weapons, got extra parts or an extra set, google warframe market, make an account, check what certain parts or sets are worth and put 'm up for sale, you'll get a whisper ingame from people that are intressted, voila you got plat withoug spending a single dime for the game.