Mary saw a bangle bracelet at an accessories shop that she liked and told her friend Susan that the most she would pay for it was ​$38.00. When she found out the price was ​$33.50​, she immediately bought it and gained ​$
nothing in consumer surplus. ​(Enter your response rounded to two decimal places​)
If Mary was to buy another bangle​ bracelet, her additional consumer surplus would

.