Rise of the Tomb Raider microtransaction scheme is pretty damn ridiculous. You can buy "expedition card packs" (or grind for the in game credits). These cards can be used to modify your game with various options and perks.
One such card is called reportedly "manual grab". Which is how the old school Tomb Raider games worked, that is you need to press a button to grab a ledge you're jumping to. I don't care for it but old fans have been asking for this for a very long time. So naturally Square Enix decided they can take this basic game mechanic demanded by the fandom and sell it to them for extra cash.
Oh, and most of these cards can only be used once. So you would have to buy/grind over and over again. And they contain random cards so you can't just buy the one you want. And there are 300 of them.