What age are these units? ( Obviously S9I are fairly new, others?)Do you have dashboard pics of their performance? Are you willing to use " Trusted Forum member Escrow" to transact the deal?
The 40 S9s were ordered in November 2017, deployed and mining since January 2018.
The 40 S9is were ordered in May 2018, deployed and mining since June 2018.
Escrow is fine.
I can send you a snapshot of the dashboard or the latest invoice, which shows hashes reported for the last month.