Depending on your aircraft size, go to Cannes or if you are bigger go to Hyeres Toulon (7000 ft).
What you save on handling landing and parking and hassle pays for the Helicopter xfer for your pax to either Grimaud (St Tropez), Cannes (Cannes), NIce (Nice) or Monaco. All xfers between 15 & 25 mins, Heli parks next to Jet
There is a signature and a brand new GAT at Hyeres, invariably if you are just dropping off in Cannes you can do without Handling and save €190.00
Only snag is Hyeres is PPR as its Naval but never withheld as far as I know.
Not only that but if you are coming down UL128 from the UK its probably 15 mins quicker which also contributes towards the cost of the heli.
Helisecuritie is best Ive tried them all. If you book preseason you will probably get one xfer free if you pay for 10