I have two Antminer s4 batch two from Bitmain ordered 12/11/14 for $500 each or $950 for both + shipping from zip code 28411 + any fees pay pal or escrow service. They are running fine at:
unit one 2.075th/s at 1420 watts at the wall with 21 hardware errors per hour
unit two 2.015th/s at 1400 watts at the wall with 1 hardware errors per 3 hours
please send me a pm if interested. Thank you for looking.
edit price update
https://i.imgur.com/kYjNjYk.jpg