All Co-op Commanders are playable for free. However, most are capped at level 5 unless purchased, except for Raynor, Kerrigan, and Artanis, who are completely free.
Below is an overview of what is currently free and where you can safely get the game. What is Free in StarCraft 2? skachat kliuch k starcraft 2
While the base game is free, certain single-player expansions and cosmetic items still require a purchase through the official Battle.net Shop : StarCraft II All Co-op Commanders are playable for free
