The first big balance patch for Balatro is now fully live on Steam, bringing with it performance improvements, numerous gameplay adjustments, bug fixes, and a reduction in the cost of Fibonacci, "because Fibonacci."
I have no idea what Fibonacci did to deserve such flippancy, but so far the response to the change—Fibonacci "costs $8 instead of $7, because Fibonacci"—seems quite positive. At least one redditor took issue with a similar tweak to Odd Todd, though, writing, "When Odd Todd triggers on an odd card...