SanDisk 64GB 2.5″ SATA Internal Solid State Drive for $59.98 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. At the time of this post, 33 out of 35 user reviews have given it 4/5 and 5/5 stars. Most places have it for about $79.