Cost effective marina or buoy in S.France or Corsica in July

[spanna]

Hi,
I have to leave my boat for a week and fly back to the UK and I am looking for a cheap place to leave her for a week. It will be at the end of July and I know the marina prices are pretty expensive around that time. Wondered if anyone has any suggestions. Best places for our flight is from around Nice or in Corsica. We can take public transport if it is a bit out of the way to get to the airport. Happy to leave her on a buoy if that works out to be good value.

Would love some suggestions that don't cost the earth!
thanks
Anna