TigerDirect offers the Crucial 256GB M550 Serial ATA 6Gb/s 2.5" Internal SSD, model no. CT256M550SSD1, for $114.99. Pay using Google Wallet to drop the price to $89.99. With around $4.18 for shipping, that's the lowest total price we could find by $21. It features read speeds of up to 550MB/s and write speeds of up to 500MB/s. Deal ends December 27.

Not that the Google Wallet discount can only be used once per account.