$65 Low-end rackmount case on newegg - 13-14 drive capacity

http://www.newegg.com/Product/Product.aspx?Item=N82E16811182566&nm_mc=EMC-IGNEFL032708&cm_mmc=EMC-IGNEFL032708-_-ServerChassis-_-L3L-_-11182566

If you are a newegg promo subscriber, enter EMCADCHAH as the promo code for free shipping.

This is the case I am using for unRaid and am very happy with it.  See my recent review (JRS).  At the current discounted price of $65+free shipping, it would be hard to find a better case that would hold 13/14 hard drives (depending on if you used a 4-in-3 or a 5-in-3 drive enclosure in the 5.25" bays).