When I am about to place an order for 10 units E9, the sales person requested 50% up front payment. I stepped back after that.
They're willing to front you 50%?
VERY generous for the cryptocoin mining industry, which has traditionally been "FULL payment in advance".
What I mean is they are currently out of stock, but will be available by the end of December. If want to order now, they are requesting me to pay 50% as deposit and pay the remaining 50% when those miners are ready to ship. That's a red flag for me.