Tennisball Serves Swing Trainer, Designed to Enhance Tennis Serve, Forehand, Backhand, volleys, and Overall Court Performance,Tennis Training aids for Children(9-18) and Women to Refine Technique is up for auction in Sports & Outdoors. The current bid is $5.00, 92% below the $60.00 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.