27.659 - Went to a local dealership via Tesco of course coz hey have a 28 day refund policy.
Funny story - whilst in tesco bought some cauliflower coz it looked good, anyway bought 28 cases, well 14 really coz they were in the middle isle and were on a buy one get one free.
Paid for the cases and the cauliflower, put them all in the Discovery, had to fold up seats number 6 & 7 to make them fit, set off once again for the dealership, on passing a local petrol station noticed that they had petrol slightly cheaper than everyone else, popped in filled up.
Eventually got to the dealership, tried the cases and hey presto 27.659
Enjoy your holiday coz I used up a whole day of mine, helping you out and I need to return these damn cases now.
PS - would it not be easier having a trial run.
Enjoy