newegg offers the Monster Digital 240GB Daytona 2.5" Serial ATA 6Gb/s Internal SSD, model no. SSDDB-0240-A, for $119.99 plus $3 for shipping. That's $0.51/GB and one of the least expensive 240GB SSD drives we've seen. (It's also a current in-stock price low by $75.) This drive features read speeds of up to 550MB/s and write speeds of up to 515MB/s.