Just waiting to see who else get's the tunnel, but these seems like a good deal/time :
Departure
(local time) Short Stay Saver Fare | Folkestone to Calais | Friday 25 May 2012 Check-in closes
08:20Departure time
08:50Arrival time
10:25£47
Returning
(local time) Short Stay Saver Fare | Calais to Folkestone | Tuesday 29 May 2012 Check-in closes
19:50Departure time
20:20Arrival time
19:55£42
Vehicle details
Car/Car based Van
Total cost
£89