Ordered 3 different books. Recieved one very quickly but the other 2 did not arrive until bring chased after the suggested 8 working days. To be fair World of Books replied promptly but I then recieved 2 copies of same book! No reply to an e-mail to Customer Services and then after chasing up via the website was advised that the outstanding book had been subject to a "high volume of orders in seconds" thus no further stock being available. Why this wasn't mentioned at the time of placing the order or when I first chased this up was not clear or explained.