SanDisk 64GB 2.5″ SATA Internal Solid State Drive for $46.99 after promo code EMCPGWF28. Shipping is $0.99 for a total of $47.98 shipped. Here is a screenshot for your reference. It features SATA III (6 Gb/s) Interface with 240 MB/s max write and 490 MB/s max read. Most places have it for about $59.