The PlayStation Store runs massive sales frequently (seasonal sales, "Days of Play," etc.). Games often drop in price by 50-80%. Buying games this way ensures you get official updates, online access, and support for developers.
Many sites claim "Descargar juegos PS4 PKG oficiales gratis" (free official games). These are almost always: juegos ps4 pkg descargar oficial
It seems you're looking for (games in package format). "Days of Play
For users venturing into forums and websites offering PKG downloads, the risks are significant: juegos ps4 pkg descargar oficial
"Fake PKGs" downloaded from third-party sites for use on "jailbroken" or modified consoles. ⚠️ 🛠 How to Officialy Download Games