Dover to Calais on foot: £1
Car afternoon day trip (online only): £15
Car full day trip: £17
use promotional code: dailymail
When I tried online it told me the code was invalid but I rang the helpline 08705 980 333 & used option 4 and told them I had tried using the promotional code online they said they could book it up for me at the discounted online rate as opposed to the phone rate which was £4 more.
Book from today until March 28 2007 and travel from tomorrow until march 29 2007.
A £10 supplement applies when you travel on a Saturday.
I've always found France to be shut on a Sunday (something they've got right) so dont bother going there then if your after shopping.
Im pretty sure I remember reading you can have a car with upto 9 passengers, but you'd have to check when you ring up to book.