There are a number of different options depending on how you choose to cross the Channel. It is worth remembering that what you save on a shorter ferry crossing means a longer drive. France is a huge country and the roads are excellent but Péage (tolls) for motorways can add to costs as well as needing more fuel.
Whether traveling via Ferry or Euro-Tunnel, once you arrive in France here are some basic details and approximate costs from the most popular crossing routes. (According to Google Maps 2019)
4 Chemin Des Fosses, 79350 Faye-l'Abbesse, France