Amazon offers the Crucial 128GB M550 Mini-Serial ATA Internal SSD, model no. CT128M550SSD3, for $49.99 with free shipping. That's the lowest total price we could find by $33. It features write speeds of up to 500MB/s and read speeds of up to 550MB/s.

Also available is the Crucial 256GB M550 Mini-Serial ATA Internal SSD, model no. CT256M550SSD3, for $89.99 with free shipping. That's $30 below our mention from a month ago and the lowest total price we've seen. (It's a current low by $42.)