Looking at your account, I show that did charge you for the Pathfinder Roleplaying Game Core Rulebook at the same time that we charged you for the AP books, just not in the same charge. So we charged you for the AP books, and at the exact same time we also charged you for the Pathfinder RPG Core Rulebook, the charges were just split into two (likely because the Core Rulebook was added onto this order after the order had already been created). I am showing that they all shipped at the same time in one package, however.
How long should Priority Mail take? It still hasn't arrived. I.E. How long until I should get worried that the Post Office has lost another package?
Priority Mail estimates 2 to 5 business days in transit to your address. However, this is only an estimate, and your order could take longer to arrive - even up to a few weeks.