Yep, it costs me £16.50 return by train from Sheffield (Meadowhall) to Manchester Airport (including luggage charges (none), credit card fees (none), insurance (none), security charges (none) and seat reservation fees (none). "Checkin" 1 minute before departure. Probably about 40 miles each way; tickets booked a few days in advance.
Car parking is free!
Sorry to go off-topic, but that's part of my journey to the IOM and it's interesting to compare with the flight section.