Purely cosmetic items (armor skins, weapon effects) and "Stash Tabs" for better inventory management. While serious endgame players eventually buy stash tabs for convenience, they are not required to reach the top level. Gameplay & Depth
New "Leagues" introduce fresh mechanics every few months, keeping the game from feeling stale.
If you enjoyed Diablo or Torchlight and want a game that respects your time more than your wallet, Path of Exile is a mandatory download. It is a deep, dark, and rewarding journey that proves "free" doesn't have to mean "cheap."
The sheer amount of systems (Crafting, Heist, Delve, etc.) can be paralyzed for a new player.