I was introduced to the Agatha Raisin books quite a while ago and I must have enjoyed the first one because I've read others on and off over the years. I won't be reading any more. Although, in the interest of fairness, I might go back and re-read the original one to see whether it's the book or my taste in reading that has changed. If I'm being kind then this book wasn't very good but if I'm being honest I thought that it was puerile. I won't be giving any plot spoilers because, just a few weeks after reading it, I couldn't tell you what the point of it was. I remember 'who dunnit' but I have no idea why. Character-wise, I imagine that Agatha is supposed to be a strong, modern woman but to me she came across as self-centred and petulant.
As a person who will read anything form Chick-Lit to Chaucer, I have no wish to offend devoted followers of M. C. Beaton. However, if an author is making a living by selling their wares to those same followers, I think that they should be treated with some respect. I don't remember what I paid for my copy but even at the reduced price, it wasn't worth it.