Amazon offers the QNAP Diskless System Network Storage, model no. TS-431, for $292 with free shipping. That's the lowest total price we could find by $37, although we saw it for $8 less last month. It features a Freescale ARM Cortex-A9 1.2GHz dual-core processor, three USB ports, and access for four 3.5" or 2.5" SATA hard drives or solid state drives. Deal ends March 14.