newegg offers the Sans Digital TowerRAID 4-Bay Serial ATA Hard Drive Enclosure, model no. TR4M+BNC, for $54.99 via the directions below. With free shipping, that's the lowest total price we could find by $65, although we saw it for $5 less two weeks ago. Features include eSATA connectivity and a 3" cooling fan. Deal ends September 11. To get this deal:

1. Add the Sans Digital TowerRAID 4-Bay Serial ATA Hard Drive Enclosure to cart for $99.99
2. apply code "0910BTS5" to drop it to $84.99
3. redeem this $30 mail-in rebate for a net price of $54.99