French Customs Charges
I usually clear customs at Bergerac airport en route to my home airfield in the south west of France because the landing fee is just over 4 Euros and Avgas is readily available.
Shortly after my last arrival, I received an invoice that included a 50 Euro charge for "Autre produits d'exploitation". When I queried this I was told the charge had recently been introduced for customs attendance for private flight arrivals. It seems security arrangements have been beefed up and customs arrive for arrival and departure of all flights.
Apparently, the charge is made whether or not the customs officers are in attendance for commercial flights (as indeed they were at the time of my arrival).
I think I will be looking for an alternative customs airport in future as there are a number of alternatives available. It will be a question of balancing landing charges against the imposition of customs attendance costs.