To get the deal, you will need a personal American Express Card (not a business/corporate card).
Add one of the hard drives to the cart.
View the cart, and apply code 15NOW to get 15% off of your first order.
The cart should total about $61.20 for the Serial-ATA drive, or $69 for the portable drive.
Open a new browser window, and go to AmericanExpress.com.
Log in, view the recent transactions of your personal (non-business) American Express card, and scroll to the bottom.
Click on available "Amex Offers & Benefits", and add a "Jet.com spend $50 or more, get $20 back" promotion to your card.
After the AmEx promotion has been added to your cart, complete your purchase on Jet.com.
Your order should ship within a day, and AmEx should email you confirming the $20 credit.
Final price should be about $41.20 for the Serial-ATA hard drive, or $49 for the portable drive.
- 2.5" Hard Drive Enclosure for about $5.50
Seagate Expansion Portable 2.5-inch USB3.0 Hard Drive Enclosure for $0.95 plus about $4.15 shipping (around $5.50 depending on your location).
There are 2 product reviews on their site, both are positive.
This is an "open box" item, so it will come with the 2.5-inch drive enclosure only.
No product box or manual, and the warranty length is 90 days.
No hard drive is inside; it is meant for you to install a 2.5" drive and turn it into a portable USB device.
We have never shopped at MacSales.com, but their company has a lot of followers on Google+ and Facebook.