mwave offers the Sans Digital MobileSTOR 2-Bay eSATA / USB External 3.5″ Hard Drive Enclosure, model no. MS2UT+B, for $119.99. With free shipping, that’s the lowest total price we could find by $9. This enclosure can hold two Serial ATA hard drives with up to 4TB total and supports RAID 1, 0, JBOD, Safe33, and Safe50.