Mwave offers the Sans Digital 4-Bay Serial ATA to eSATA Enclosure, model no. MS4UM+, for $99.99 with free shipping. That's tied with our mention from three weeks ago and the lowest total price we could find by $49. This JBOD tower can hold up to four 3.5" SATA hard drives (maximum storage capacity of 12TB) and features port multiplier technology and USB 3.0.

Note that this enclosure requires a separate adapter for RAID.