As of my knowledge cutoff of 2021, the most expensive camera available on the market was the Hasselblad H6D-400c MS. This medium format camera is priced at around $47,995 USD.
Some of its features include a 100-megapixel CMOS sensor, 16-bit color depth, and the ability to capture 4K video. Additionally, it has a multi-shot capability that allows it to capture up to six images and combine them into a single 400-megapixel image with exceptional detail and color accuracy.
It’s worth noting that new cameras and models are released regularly, so it’s possible that there may be even more expensive cameras available now or in the future.