I buy all my computer peripherals from here like memory hard drives and hard drive enclosures. Wonderful customer service. Between OWC, monoprice and Sweetwater, all my computer and music technology needs are met.
Apple MacBook Pro A1278 13.3" Laptop - MD101LL/A (June, 2012) 500GB HARD DRIVE - http://electronics.goshoppins.com/laptops-netbooks/apple-macbook-pro-a1278-13-3-laptop-md101lla-june-2012-500gb-hard-drive/
Replacing the hard drive in any MacBook Pro takes a little surgery, but it's not so hard that you need to pay Apple customer support to do it for you. Our step-by-step guide shows you how to upgrade the hard drive on a MacBook Pro so you can extent the life of your laptop.