Intel has not started selling the Alder Lake-S series yet, but Amazon has revealed prices for all SKUs in multiple countries. The listings confirm a previous leak concerning retail packaging, too.
https://www.notebookcheck.net/Amazon-leaks-European-and-UK-prices-for-Intel-Alder-Lake-S-product-stack-including-the-Core-i9-12900K.568739.0.html