IMO 200 pc's to get an oz might apply to the newest generation of machines.
Technology has allowed them to flash coat the connectors extremely thin.
The old stuff is where you may have a good chance of making bucks.
Like anything else, you gotta know what you're doing to make money at it.
I've just found a suitcase full of 5 1/4 floppy disks and 3 1/2 mini disks I had stored away with programs on them I thought were important... Ha! Silly me!
And I clearly remember paying $600 for a 160mb hardrive to replace a 20mb I had overloaded.
Got all kinds of connectors and cabling for old systems that just won't be useful any longer.
Ha! Ha! A friend once bid $50 on the computer system in a water company for a large metropolitan city.
No one else bid on it.
We went to help him get it in three pickup trucks.
The computer itself was big as a gas powered Lincoln arc welder. Took a forklift to pick it up!
It was online when we got there. The system tech used a scredriver to lock the drives. 2 x 60meg. HUGE!
All the cabling through a large building, printers, and about 60 green screen terminals came with it.
It wasn't worth it!
Sometimes you get more than you bargain for!
Scrapping is best left for professionals!