score:3
Aer Lingus has a section on overweight fee, but it lists it as a flat fee. Perhaps there is some mistake on either page.
Excess baggage fees: Longhaul flights - all bags over 23kg-32kgs (50lbs-70lbs)
75 euros, or
65 British Pounds, or
100 US Dollars
Shorthaul flights - per kg over allowance (airport only)
15 euros, or
12 British Pounds,or
- US Dollars (Unexplained - possibly: invalid on short-haul flight)