Just picked up £52.96 worth of books @ lonely planet for £25.87 (plus £3.88 quidco) and free shipping! Current offer is a free Blue List 2008 (worth £15.99) and free postage with orders over £25. Plus, the 'QUIDCO30' voucher still works (it should have expired at end of 2007!), which gets you 30% off.
I wanted eastern Europe and Madagascar books, which came to under £25 with the 30% off, which meant that i'd have to pay postage that takes the total to nearly £26! So, I added a phrase book, which made the total £25.87, which meant I got the free book, as well as free postage! woo!