Amazon is offering a large selection of their new Amazon Explore Live Virtual Experiences for $10 (previously $15) with the discount shown at checkout. Includes the Berlin Virtual Walking Tour: Rise of Hitler and the Cold War (90 min private session) for $83 - $73 off at checkout = $10. 

Sessions are livestreamed by hosts from around the world; you schedule a specific date and time for your Experience when you make your purchase.