AData Premier Pro SP600 64GB 2.5" SATA Internal Solid State Drive for $49.99 shipped.  Here is a screenshot for your reference.  Alternatively, it is available at Amazon for $69.99 shipped.  It features SATA III (6 Gb/s) Interface with 130 MB/s max write and 360 MB/s max read.  Most places have it for about $69.