Newegg offers the Mediasonic ProRaid 4-Bay 3.5" SATA USB 3.0 Enclosure, model no. HF7-SU3S3, for $99.99. Redeem this $20 mail-in rebate to drop it to $79.99. With free shipping, that's $40 off and tied with last week's mention as the lowest total price we could find. It supports up to four 8TB hard drives and features USB 3.0 transfer rates of up to 5 Gb/s and eSATA transfer rates of up to 6 Gb/s. Rebate expires September 22.