Was looking at this and running the numbers. @bittawm which model RPis are being used?
Running with the logic of if there are the later 3B then 8 of them are still worth $300 on the secondary market.
There are also some other RPi cluster projects out there.
Going to have to mull this over for a bit.
-Dave
They are the 3B+ model. (with 8 mini ethernet cables, a built in switch and power supply)
This unit retails for over 1k
I have changed price to $500