What things really cost.

The advertised charter fee is usually little more than half of what you actually pay. Here is what the sticker leaves out — and how to work out your true total before you commit.

The nightly rate gets you in the door; the checkout total is another matter. Here are the charges holiday-let platforms add after you have fallen for the photos.

A headline package price is engineered to look competitive. The real cost of the trip is what you pay once every add-on is counted.