Forgive me if I've misunderstood, A2QFI. but from what I can make out if you book a package holiday with Thomas Cook you get 15kg free allowance. If you book a flight only, you pay £16 per person per flight for a 20kg allowance. If you book a standard fare with easy you pay £28 (£56 if you pay at the airport). Only if you buy the massively expensive "flexible" fare with easy do you not have to pay extra for hold bags. (All taken from a cursory look at the respective web sites). If I'm wrong, I apologize. But to me that makes TC the better deal, given that the CAA sees to think your case only weighs 13kg.