The Casio Privia PX-S3100 is an 88-key digital piano listed in black and described as Very Good - Refurbished condition. This makes it a practical option for buyers who want a full-size keyboard setup while considering value and condition up front. Free Shipping is included, which may help when comparing total cost with similar digital pianos. The listing title clearly identifies the model, so it should be useful for shoppers specifically searching for the PX-S3100 rather than a general keyboard. If you are comparing used, refurbished, and new instruments, this condition note is an important buying factor. Check the listing for full details. Casio Privia PX-S3100 88-key Digital Piano - Black. Condition: Very Good - Refurbished. Listed at 679.20 USD. Type Privia PX-3100 Digital Piano. Sweetwater is an Authorized Casio Dealer. Software Casio Music Space App (iOS/android). Pedal Included Yes, SP-3 Sustain. Number of Keys 88. Bluetooth via WU-BT10 Adapter (included).