Tariffs 2013 provides prices and chalet styles (in French) which 1. and 2 below are mobile homes (caravans with driving capability) but you don't drive them anywhere merely sleep and cook in them.
Below is a summary of available chalets/cabin in English:
1. Mobile Home Super Mercure, 28m2 plus covered terrace, for 5 persons max, Sat to Sat 300 Euro, per night for a min of 3 nights is 50 Euro = $65 AUD per head for 3 nights and probably $55 AUD per head p/n for 8 nights
2. Mobile Home Super Astria, 16m2 plus terrace, for 2 persons max, Sat to Sat 230 Euro, per night per night for a min of 3 nights is 45 Euro = $59 AUD per head for 3 nights and probably $49 AUD per head p/n for 8 nights
3. Two small cabins shown in final three below pics @ 18 Euro per night for one and 25 Euro per night with two bunks in each = $28 AUD per chalet / 2 = $14 AUD per head per night