50% more power than what?! The 12600k uses 150W max turbo, and this is OVERCLOCKED to an all core 5.1 and only uses up to 173W, I'm not great at math but that's not anywhere near 50% more.
If OC on such an early sample on such an early mobo only uses 173W then yes AMD should be scared.
Also if the cost of making CPUs increases that much that intel would have to charge 50% more then AMD would be out of business completely, they wouldn't be able to make any CPUs anymore at all.
TSMC already increased prices by 10% last year and is going to increase them again by another 6% in 2023, so it's not like intel is the only one raising prices, in relation to the competition CPUs prices will remain the same.
https://www.tomshardware.com/news/tsmc-to-hike-chip-prices-in-2023