I have 3 temperamental s5's gathering dust, they still work but have varying levels of nuisance ,quirks and attention to keep them hashing, no more than 2 xx' or missing oo's per machine
if you are just harvesting chips would you rather just receive the hashing boards and nothing else? it be no trouble for me to strip them down, it be cheaper to ship id suppose.
I also have a "non warranty-able" s9 hashing board i can throw in if that interests you.