Newegg offers the Mediasonic ProBox 2.5" SATA Hot-Swappble Enclosure, model no. HDR-SU3, for $4.99 via the directions below. With free shipping, that's $15 off and the lowest total price we could find. It features USB 3.0 transfer rates up to 5 GB/s, and is compatible with Mac and Windows OS. Deal ends June 22. To get this deal:

1. View the Mediasonic ProBox 2.5" SATA Hot-Swappble Enclosure for $19.99
2. coupon code "EMCATKT52" drops it to $9.99
3. this $5 mail-in rebate nets a final price of $4.99