THIS IS OVER YOUR BUDGET SO MAY BE USELESS (but helpful to others)!
Price: $2283.0 or 5.94672175 Bitcoin
https://www.hashnest.com/hash_currencies/25/incomeCheck HERE
You need to create an account because of the security of hashnest but it is part of bitmain which is a well respected company in bitcoin mining.
This may be better for your money. 700 units went on sale yesterday (i think).
Stock still at 406.
No problem with worrying about the hardware problems reported and the speculation of the S7 as data is calculated from Antpool's income.