You can get the core rule books for each of these for $15.https://www.humblebundle.com/books/give-gift-pathfinder-starfinder-paizo-books?utm_content=cta_button&mcID=102:635975a05e05e81fdd09a5da:ot:60c78a04730d25f072603e94:1&linkID=635975a2d819bf0fe90f3b28&utm_campaign=2022_10_27_givegiftpathfinderstarfinderpaizo_bookbundle&utm_source=Humble+Bundle+Newsletter&utm_medium=email
