A four seater >1 tonne MAUW will be about £27. I think the 1st 2hrs are free but then you get charged - I don't reckon you'll get much change out of £35
You need PPR - Call Bournemouth Handling(01202 590888) They will give the cost as well as the PPR Number stuff.
On landing you will be directed to the Bournemouth Helicopters apron (situated at the southern threshold of Rny26) were you pay the dosh - (They're very friendly)
Prior to sallying back from whence thee came don't forget to book out (Bournemouth handling will help you with this or else phone 01202 364150 and do it direct with the Tower).
Have a goood visit