I still don't think you are understanding. On a kg ticket, they would charge per kg, and am sure it wouldn't have been 100GBP per kilo, unless there were other airlines involved with the flight. On a piece ticket that would charge per piece up to 23kgs and would be around that 100GBP price point.
On the contrary I understand very well. You can either accept what I wrote which is accurate (other than the maths typo) or not. Your choice.
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