There has been many comments of passengers and their own personal weight, do you think it's fair that a person that weighs 20 stone upwards pays the same as a person weighing from 10 stones up to the mentioned weight?
Yes the charges are fair. I could sit next to you on an aircraft and you have a 23 k suitcase in the hold, while my suitcase weighs 15K and we would be paying the same money.
The weight of the passengers is done on an average and is calculated per head. Along with cargo, baggage and other factors such as headwinds, length of flight etc, the fuel figures are worked out from that.
If their bulk doesn't spill over into my seat it's fair that they pay the same price as I do. If they encroach upon my space, they should pay for two seats and leave me the space I've bought and expected to get.