Amazon offers the Synology DiskStation 5-Bay Diskless Network Attached Storage, model no. DS1512+, for $699.99 with free shipping. That's $50 under our November mention and the lowest total price we could find elsewhere by $32, outside of the price below. It features read speeds of up to 192 MB/s and write speeds up to 194 MB/s.

A close price, NothingButSoftware has it for $716.41 with free shipping.