@Toupsu thank you for the info 
But I never buyed anything to BITMAIN, and my price is the same in group order or individual buy order.
I supose if you buy one by oneto BITMAIN, you get a discount. you are a good customer of BITMAIN and they take attentions with you : ) I'm glad to hear that.
I prefer buy all my units in one time and not spend time to buy, to pick up, to pay taxes, etc every single day.
But I never buyed anything to BITMAIN, and my price is the same in group order or individual buy order. I supose if you buy one by oneto BITMAIN, you get a discount. you are a good customer of BITMAIN and they take attentions with you : ) I'm glad to hear that.
I prefer buy all my units in one time and not spend time to buy, to pick up, to pay taxes, etc every single day.
And I never forget it again, do not make non refundable orders.
Better Read This https://bitcointalk.org/index.php?topic=504530.0 here are all already been said.
Besides, this SP-30 has already been sold here at a bit better price and a month earlier Dispatch. Must be crazy, to pay for the 6TH/s in september 4.400 U$D + taxes.
I'm still in talks with Spondoolies but I hope a price below 4.400 U$D Actual price for normal buy is $5,095.00 per unit.
Do not forget that they produced 3000 pieces per month!