Baby Einstein Ocean Explorers Kick to It Opus Musical Infant to Toddler Rocker, Baby Chair, Baby-Activated Music and Lights, Ages 0-30 Months Opus Rocker is up for auction in Musical Instruments. The current bid is $1.00, 98% below the $59.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.