Season pass

On the first day of college, the Dean addressed the students, pointing
out some of the rules, saying,
"The female dormitory will be out-of-bounds for all male students, and
the male dormitory to the female students.
Anyone caught breaking this rule once will be fined $50. "
He continued, "Anyone caught breaking this rule a second time will be
fined $150. Being caught a third time will incur a hefty fine of $400.
Are there any questions? "
At this point, a male student in the crowd inquired, "How much for a
season pass? "