If you pay with PayPal and use promo code PAYPAL2020 at checkout, you can save an additional 2% on already discounted game keys at CDKeys.com. This includes PC, PlayStation, Xbox, and Nintendo games, most of which are already much cheaper than buying elsewhere.
We regularly buy games and PlayStation Plus or Xbox Live subscriptions from CDKeys, and can attest to their legitimacy. Saving an additional 2% is just a bonus bargain.