Jen and Mark, two customers at an appliance retailer, are each taking out a personal loan of $2,000 to finance the purchase of new appliances. Jen has been offered a two-year loan with an APR of 8.99% and monthly payments of $91.36. Based on a lower income and weaker credit history, Mark was offered a two-year loan with an APR of 12.99% and monthly payments of $95.07. Assuming that Jen and Mark both pay off their loans according to the 24-month schedule, how much more will Mark end up paying in interest?