Johnny Cash operates a music store for children. He sells guitars for $150, drum sets for $250, keyboards for $240, and music lessons for $30/month. Alternatively, parents can purchase a "Baby's First Rock Band" bundle that includes all three instruments, plus a year of lessons for a single price of $800. Madonna purchases one rock band bundle for her granddaughter on June 15. How much revenue should Johnny recognize on June 15? $640 $764 $800 $512