just for fun I googled to see if there is a digital back available for my medium format camera... there is... for $7199 street price...
oh, add in the adapter for it and it's over $8000.
however it is a 22 Megapixel back, takes both RAW and JPG formats simultaneously and comes with native software to process the imagery.
Obviously, not a hobby purchase, that would be an investment for when I throw my hat back in the ring as a pro portrait photographer.
Something I'm always keeping in the back of my mind.