This is not investment advice but...
It's lazy and dumb to sell camera lots. Only do it if you need to sell junk and it's not a profitable use of your time to sell individually.
Indeed, it pains me to say it, but most cameras are worth more in parts than as a whole, especially broken and scruffy cameras.
You may think you're adding value by assembling a complete collection but you aren't.
"Buy individual cameras or systems and use them!" - says me, the hypocrite.