OK, after a lot of research, here's the latest info I've been able to find on the cheapest places where you can buy the 1) hardback, 2) paperback or 3) eBook of Archibald Lox Volume One: The Missing Princess, the start of my new series, which collects the three shorter eBooks that I released earlier this year.

1) If you're looking to buy a hardback edition, the best deal at the moment seems to be on Book Depository, which is selling it at a 17% discount (about $26.23 instead of $32), with free shipping worldwide. Here's the link, which should direct you to your country's branch and show the cost in your local currency: https://www.bookdepository.com/Archibald-Lox-1-Darren-Shan/9781910009147

2) You can get the paperback on Amazon for the same price as Book Depository ($16),and they seem to be the stores offering the best price -- here's the link for te main Amazon site, but it's available on all Amazon stores worldwide: https://www.amazon.com/dp/B08LCC2SW8/

The physical editions are on sale through lots of other stores too, so it's always worth checking in case you can get a copy cheaper elsewhere. A site called Booko provides links to most of the stores: https://booko.info/works/7891968

Some stores don't show up on Booko, including Waterstones and WHSmith in the UK. I'm including links to both of those below, but if you have a preferred store that isn't listed on Booko, it's worth having a look, in case they have the book in stock.

Waterstones: https://www.waterstones.com/book/archibald-lox-volume-1/darren-shan//9781910009147

WHSmith: https://www.whsmith.co.uk/products/archibald-lox-volume-1-the-missing-princess-archibald-lox-volumes-1/darren-shan/paperback/9781910009109.html

3) If you're happy reading the book in digital format, you can buy the eBook for just $4.99 or your local currency equivalent, which is a LOT cheaper than the physical editions. Here are the links for that:

Amazon: http://getbook.at/ArchieVolume1

Google Play: https://play.google.com/store/books/details/Darren_Shan_Archibald_Lox_Volume_1_The_Missing_Pri?id=w7ADEAAAQBAJ

All other stores (Apple, Kobo, B&N, etc): https://books2read.com/u/bzgLx9

Finally, as I said already, Volume One: The Missing Princess collects the three short ebooks that I released earlier this year. They are still on sale in that format, and Book 1 is FREE to download, so if you want, you can give the series a try for FREE before committing to buy. Book 1 is called Archibald Lox and the Bridge Between Worlds, and is on sale through Amazon, Kobo, Apple, Google Play, B&N and lots of other eBook stores worldwide. If you decide to buy Book 2 and Book 3 after reading Book 1, the total cost will be the same as if you buy the digital book of the Missing Princess collection, i.e. $4.99 or your local equivalent.