Well for landing fees and parking you're looking at 76euro for a SEP friday-sunday.
Aircraft hire, well I suppose it depends on what you take. I went in a group C182 which took about 1h 45 each leg and these cruise at about 135knots. If renting I wouldn't expect any change from £500 to be honest.
Its a good trip, I flew VFR and was very lucky with the weather. We did a relatively long channel crossing, but if you're not comfortable doing that expect a longer flight time.
If flying I would say its best to camp at the airport, then you don't have to lug all you're gear about. The disadvantage of couse is that you need to walk 20mins or so to the track every day and you are limited as to what you can take.
On the plus side its great when the race has finished. I was home having dinner within 2 hours.
Here we are on the climbout from Lemans
