The whole business makes me so cross - both ends of the journey!
So it doesn't matter that once you've paid the excess baggage charge you'll then go through to departures and buy a litre of voddy or such like, a carton of ciggies, a bottle of perfume, some make-up, perhaps boxes of sweets, jars of honey, maybe even a couple items of clothing, another handbag..... it's just another rip off!
Rant over...
Mazz