From what I understand, they were having trouble getting the chips. A lot of companies were selling for +/- $2700 with an expected Aug ship date, back in July.  I had placed an order for 3 with a reputable company in FLA.  I was contacted by that company and told that Bitmain was unable to fulfill orders on time and had jacked up prices to $4k.   
 
  I cancelled my orders and grabbed two on eBay.  Still have my eyes peeled for a third one