newegg offers the Sans Digital TowerRAID 4-Bay Serial ATA Hard Drive Enclosure, model no. TR4M+BNC, for $59.99 with free shipping, via the directions below. That's among the best prices we've seen for a 4-bay Sans Digital hard drive enclosure, although we saw it for $5 less during Black Friday week. It features eSATA connectivity, a 3" cooling fan, and more. Rebate expires December 9. To get this price:

1. Add the Sans Digital TowerRAID 4-Bay SATA Hard Drive Enclosure for $99.99
2. use coupon code "RSHACK2012" to make it $79.99
3. redeem this $20 mail-in rebate for a final price of $59.99