This is one of the few books that has got my weaker readers involved in reading - in fact, last year's class were virtually fighting over the series. Comments such as 'It's not fair. I finished Book 2 last week, and she's hardly started Book 3. Can you ask her to hurry up - or get another copy' were abounding once I had produced the books!
As far as I'm concerned - if a book can get a child interested in reading, it's well worth it!
Keep writing, please, Andrew Cope! My class long to read more of Lara'a adventures!