Let's see how the analysis was derived: > Note: Assumes China wholesale price ($0.06/KWh), using listed specifications for Antminer S9 (13.50 TH/s), adds 30% c

Let's see how the analysis was derived: > Note: Assumes China wholesale price ($0.06/KWh), using listed specifications for Antminer S9 (13.50 TH/s), adds 30% cooling & operational costs, assumes retail is 30% markup from wholesale hardware price, 52-week depreciation schedule (Bitmain offers 180-day warranty). No transaction fee or pool fee. Hash rate and computational difficulty as of Feb. 6, 2018. The biggest sunk cost is on the hardware price. Assuming 30% markup that too in China on a China build product seems too high for me. Anyone based in China can confirm the retail markup on Antminer S9?