Review on Introducing the Game-Changing Eye Coach by Billie Jean King: Revolutionizing the Industry by Russell Roberson

The eye trainer is a decent swing trainer that's fun, but the price is insanely high. I've been looking for this for several years for my kids to practice and I finally broke down and bought it. I don't understand the costs. This thing shouldn't cost more than $100, and even that's a stretch. It's not very strong and if you don't hit it right you'll ruin the rim of your tennis racket. Does he do what he has to do? Yes, but is it worth $220? No way. I'm just shocked with the purchase. it's like buying a Coach bag. Does it really work better or is the quality better than the cheaper option? Probably not, but I assume you're paying for the name.