UK and International Book Deals of The Week
If you are in UK the whole trilogy can be bought for £4.99 from The Book People.
The Book People UK H £4.99
Amazon UK P £3.92
Abbreviations: TBD - The Book Depository, K - kindle, P - paperback, H - hardback.
NB: The Book People deliver for a set charge of about £1.50. All the prices are correct at the time of posting.