MWave has this Sans Digital TowerRAID 4-Bay Serial SAS / SATA RAID 5 Storage Enclosure for $259.99 after instant savings. The enclosure supports four 3.5" SAS or SATA hard disk drives and features a PCI-Express 4x controller, and 300MB/s read/write performance. The same item sells for $332.88 at Amazon
. Shipping is $10.77.