Its a scam. 

Anyone who has miners right now, especially s9s are asking a huge premium for them because they make between 8500-10k per year.  Which is not taking into account producing even more future revenue if the price of bitcoin keeps going up.   The risk that someone would need to take to send bitcoin overseas three months in advance while missing out on the opportunity to increase capital in bitcoin hodl is another reason why.

Our company started selling them here if you are interested, but you will pay a premium for the s9.  They have been selling quite well.

https://www.merkamericaco.com/catalogsearch/result?cat=0&q=bitmain