[TEL N KEL]

Sounds like $45 per day plus all other taxes and airport charges,
If it sounds to good to be true it usually is to good to be true.

You should always read paper work before signing and if the charges are not what you expect do not sign and question it.

If there is a queue behind you so be it they will have to wait until you have checked over things.

You more than likely also paid over the actual daily upgrade rate as you asked for the upgrade they would of jumped in with top price.

Unfortunately It happens to many due to being tired from the long journey.