Shazad was looking for a new pair of skis. He went to the website of Downhill Specialists Inc, found the skis he wanted, and ordered them through the website for $400. He was very pleased with the purchase because Downhill said that it did not require any payment for one year and that, after a year, Shazad could pay $50 per month for eight months. Shazad missed the first payment and Downhill sent a demand for the full price of $400 plus interest of $25 and a charge for collection of $25. The right to demand the full price, interest, and a collection charge had not been communicated to Shazad. Is Shazad bound to pay the full amount plus the interest and the collection charge?