the reviews give me bad vibes

So it's $50 on PC, but $45 on PS5 or Xbox Series X? wanted to play on the deck. Anyway to price match PC, it's actually weird when it should be reversed.

Hello there, anyone from support? I'm unable to purchase the game, especially the deluxe edition, upon selecting the payment method (paypal) and pressing continue, the following issues shows up: * Note: One or more of the items below have changed in price since you added it to your cart. If I try to proceed with the transaction, the following message pop ups: There seems to have been an error initializing or updating your transaction. Please wait a minute and try again or contact support for assistance....

What does the hidden key do in the epilogue?

I've recently been playing through the game, just finished Chapter 5, and since I'm getting closer to the end, I figured I might as well find out if achievement completion requires the extra purchase. I intend to get it later, since I'm a bit broke for upcoming couple of months. Since I've been working on all I can, would be a shame if some are locked out for a while....