Correct - there are about 8 bad boards between the 8 rigs. As I mentioned, all of the historical hashrates and reliability numbers are available buddy Need only email me and we can work out a deal. As I mentioned, I don't want a whole heck of a lot of dough for them - by the time I ship them here, and back out to a buyer... well, it's not a very efficient method. The target audience here is someone who's looking for hashrate, immediately available, with no heat or noise issues trying to take advantage of the LTC run-up to the BTC halvening.
The total hashrate is exactly 556MH on the low-end.