Wanda loves to collect comic books. Recently, she has recorded details about her entire collection, and it particularly interested in the price of the comics. 1597 of her comics cost $3.99 each, 2334 of her comics cost $4.99 each, 252 of her comics cost $7.99 each, and 77 of her comics cost $9.99 each. What is the average amount Wanda paid for a comic in her collection? Round your answer to the second decimal place