Have you purchased or sold tickets online to a professional sporting event or concert in Colorado anytime between 2011 and now? Have you used or thought about using StubHub to buy or sell tickets to a sporting event or concert in Colorado between 2011 and now? If you answered yes to either of these questions, please contact us today. An investigation is currently underway regarding a Colorado law governing terms and conditions imposed on consumers regarding the resale of tickets to entertainment events. You may be eligible to take part in a class action lawsuit and recover money.