I also wanted to park at the station, which is cheap but they have a laughable amount of parking spots and they were all filled. The commuter lot had plenty of spots, however they require a parking permit that costs $25 for the month (and my parking should only cost $2 since I need it for two days) otherwise they claim to tow. Whatever, figured I would expense it, go to the SEPTA office and they tell me that "parking permits are not for sale". So I guess I have to hope I don't get towed? Cool system.