Mwave offers the iStarUSA 4" Serial ATA 6Gb/s Disk Array Cage in Black, model no. BPU-340SATA-Black, for $84.99 with free shipping. That's the lowest total price we could find by $7. This cage fits in the space of three 5.25" bays to offer four hot swap 3.5" drive bays and supports multiple RAID configurations and drives up to 3TB.