Offering 140USD for the 500USD coupon.
Ill pay first. You choose the coin or PP FF.

Offer is valid as long as the 500USD is valid and as long as it can be used for S9i with PSU.
I am saying that as we know Bitmain can suddenly change conditions on S9i purchases and this coupon can become invalid for such purchase.

How long is you auction open? I assume till end of today or maximum tomorrow lunch time US time zone?