A certain male member of my family had one of those when they were the hottest thing going. It had (heart palpitations!) a cassete-tape drive.
There are probably collectors who will buy it to run contemporaneous game programs. Sheldon Cooper in “Big Bang Theory,” for instance ;-).
I still have mine, and we have a local interest group which meets once a month to discuss the 64 and other quaint devices.
Last month we were talking about Hollerith-coded punch cards.
A clever fellow in Denmark has made a device to take the place of the 64’s memory mechanisms, using solid-state drives and such. It takes some of the creaky gears out of the equation, and makes program retrieval super fast. The capacity is unbelievable.
Some people still like the 64’s music capability, and for a long time, quite a few people were transcribing music for the 64’s Sound Interface Device, or SID.