Newegg offers the OCZ Arc 100 Series 120GB 2.5" Serial ATA III 6Gb/s Internal SSD, model no. ARC100-25SAT3-120G, for $59.99 with free shipping. (Amazon has it for the same price, but on backorder.) Outside the price below, that's the lowest total price we could find by $10. It features read speeds of up to 475MB/s and write speeds of up to 395MB/s.
Note: If you haven't yet, use Newegg’s Android app and pay using Google Wallet to cut it further to $44.99. (This discount can only be used once per account.)