It’s all a big con, Ryanair vary taxes and charges as a way to keep the headline price at 1p while increasing or decreasing revenue. I paid £10.39 for my flight including a debit card handling charge and £16 for the return rail journey. When I booked the trip the cheapest single rail ticket to Blackpool was £45 even though I could book the trip back for £16.
This was the first time I had used this service even though I go to Blackpool around 4 times a year. While the flight was only 40 minutes it was a 4am start from my home in Luton to get to Stansted allowing enough time to check in without panicking about check-in closing before I got there.
Got to say that the train remains my first choice even though I have to get a lift to Watford or Milton Keynes as I can leave home at a reasonable hour.