I would guess it's a combination of component shortage (everything from DRAMs to resistors and capacitors), scalpers, pent-up demand for the systems and greedy

I would guess it's a combination of component shortage (everything from DRAMs to resistors and capacitors), scalpers, pent-up demand for the systems and greedy resellers... according to Eben Upton, also a very strong demand from industrial customers: https://techcrunch.com/2022/10/05/raspberry-pi-supply-chain-shocks-eben-upton-interview/ https://techcrunch.com/2022/10/05/raspberry-pi-supply-chain-... Most other ARM SBCs are much easier to obtain, so it seems that the component shortage is at least not hitting RPi's competition as badly. However, their production runs are probably much smaller, so they may have an easier time obtaining the parts they need.