https://wccftech.com/intel-core-i9-12900k-alder-lake-16-core-cpu-selling-for-1250-us-b660-motherboard-for-1150-us-in-china/

The first Intel Alder Lake Core i9-12900K Desktop CPU samples along with B660 motherboards are now being sold through back channels in China. As reported by Yuuki_AnS who is always on a hunt for unreleased chips and early engineering samples, the Intel Alder Lake Desktop CPUs being sold are in QS state though there's no way to tell if that's the case or not since no further information is provided.

According to the leaker, the two products that are being sold right now are very early engineering samples and while the seller states they are QS (Qualification Samples), other reports state that QS hasn't made it into production yet. Regardless, the Intel Core i9-12900K is being sold for a price of around 8100 CNY which converts to $1250 US while the B660 motherboard (no vendor or technical information mentioned) is stated to be priced at 7400 CNY or around $1150 US. Now both of these prices are nowhere close to the final MSRPs which will be much lower.