Re: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order
There are still miners from the October batch on eastshore. They seem legitimate enough, and you can purchase from the October batch for close to retail.
The only thing more insane than prepaying a manufacturer is prepaying a reseller that's prepaid the manufacturer. 
It's no fun (and an even greater financial loss to you) when your order gets backordered because his order got backordered. 