I am selling a Antminer S7 Batch 10 and power supply on ebay. It was used only for a few months. Perfect working conditions. If you are interested here is the link on ebay. If you would like to negotiate a deal please let me know. Only US shipping. Thanks!
I think a perfect condition 5th antminer and apw power supply wouldn't even sell for that much.
In fact I saw a double s7 and psu combo sell for 800...so your price is a little off the mark.