if you had to pay £200 for a flight to Blackpool
That isn't what I said.
for a AGP-BLK return flight, it was over €200 cheaper to fly to MAN and use the train to Blackpool North,
The actual fare that Jet2 wanted was just short of €400 (£320).
Using different carriers and Trans Pennine Express via MAN, the total fares came to less than €200 (£160).
Jet2 to BLK worked out a whole 100% dearer!