Hi, allow me to introduce myself. My name's Kesh and I've been a Sudoku player for a couple of weeks now.
WHSmiths have lots of Sudoku books to buy, and they're running a 3 for 2. I've bought 9 so far!
The Little Book of Sudoku Volumes 1 and 2 (201 puzzles each, price £3.99)
The Times Sudoku Books 1, 2 and 3 (100 puzzles each, price £5.99)
The Big Book of Sudoku (200 puzzles, price £4.99)
Carol Vorderman's How To Do Sudoku (200 puzzles, price £5.99)
The Daily Telegraph Sudoku Book 1 (I'll buy Book 2 sometime) (132 puzzles, price £5.99)
The Independant Book of Sudoku (130 puzzles, price £5.99)
Also, there's Play.com, and their Sudoku books are as little as £3.99, plus there's no delivery charge!
At the end of the month, a PC game called Infinite Sudoku will go on sale at Play.com for the cool price of £9.99. It has, literally, an infinite amount of puzzles! I'll pre-order my copy right away!