Sites near Calais for eurotunnel(Moved from General Chat)

Davethevanman

 We are visiting France again this year and following last years first crossing using the tunnel we became immediate converts after several choppy sea trips.However what we need is a campsite......caravan plus electric just for one night prior to our return.
We visit in June and use the great value ACSI sites during our stay and therefore take exception to the high charges made by La Bien Assise who want €45 for one night at the end of June.  Any suggestions welcome