Amazon has the Samsung 840 EVO Series 1TB internal Solid State Drive for $560 with free shipping.
(too much? Grab a 500GB for $299.99 with free shipping) Today’s deal represents a savings of 34% off retail and the best price ever by $11. With sequential read/write speeds of 540 MB / 520 MB, this SSD is one of the best ways to dramatically increase the performance of your Mac or PC.
Another option is to pop this drive into a Thunderbolt sled to create an external SSD solution for a total of $648, which features a nearly identical performance to standard Thunderbolt drives but carriers almost a 40% savings.