I couldn't disagree more with the other review! While I admittedly haven't read all three yet, I've read the first, and I think that the other customer misses the point. It is blatantly based on the Harry Potter series, with characters and plots being manipulated to suit the story... (Barry Trotter and the Philosophers Scone)
The names say it all, with all the characters having a different spin such as Barry Trotter himself who's still in Hogwash after 11 years, Lord Valumart whose on the Dork (Dark) side, Lon Measley (who's been hit in the head with a basher) and Serious Blech, to name a few.
If you're a Harry Potter fan with a sense of humour I would say that these books are worth a read, due to their hilarious if rather plot holed story. But this is redeemed in itself as the author admits to this in the book, using whitty satire and sarcasm to blag his way through what otherwise would have been a terrible book.
I'd say that this book is worth a read if you don't take the book seriously and just take the many random and illogical twists and turns as they come!