Also, some people might be looking for a free CD key, which is unethical and often a sign of a scam. It's better to advise legal purchases.
So the main sources are either EA's store (Origin/EA Play) or third-party retailers. If EA still sells the game, they can buy it there. If not, then third-party options are the way, but with a warning. Harry Potter And The Half Blood Prince Cd Key
Another point: The game might be available as a "Classic" title on platforms like EA Play (which is similar to Xbox Game Pass for EA games). So perhaps a subscription could work. Let me check EA Play. Yes, EA Play includes a library of games, which might include Half-Blood Prince if it's part of their catalog. If that's the case, then instead of a CD key, you just install it from the Origin app once subscribed. Also, some people might be looking for a
Also, legal notice: Emphasize the importance of legal purchases and not sharing CD keys. If EA still sells the game, they can buy it there