Price is $80.
Here is the description from the Casio web site:
The CTK-800 inlcudes 61 Full-Size keys, 32-Note Polyphony, Advanced HL Sound Chip, (also found in our workstations) Touch Sensitive with Dual Wave Form Processing, 500 Tones, 120 Rhythms, 100 Songs, Digital Effects, Genernal MIDI, Backlit LCD Display, 2-song Memory, Front Microphone Input and Volume for Sing Along-Key Control, Interactive Grading System, Assignable Pedal Jack and USB For Data Expansion, CD ROM Included.
|Simply connect a commercially available microphone to the microphone jack and you can sing along with the keyboard's built-in tunes and SMF data playback.|
|Connect the keyboard to a PC and download new songs and tones.|
|With lesson recording you can record as you play along with built-in tunes for later playback. Performance recording lets you record your performances, including Auto Accompaniment, in real time.|
|The CTK-800 stores up 5 songs transferred from a computer. Just connect your keyboard to a computer, use special CASIO conversion software to convert SMF data you purchase or create to CASIO format and then transfer it to the keyboard.|
Let me know if you have questions. Thanks!