Can anyone clear up the size/availability for me? I've got the trade paperback (9x6" = 23x15 cm) editions of the first five books.

It looks like I can get a similar size book from Amazon Canada for books 7&8. This is pretty pricey (over $20 a book with shipping to the US) for paperbacks.

I can't find book 6 - Sea Watch, in anything but small, mass market size.

Questions:

1. Was book six ever published in the 9x6" format? If so, anyone know who is carrying it?

2. Amazon US lists books 7&8 as published -- but doesn't actually carry them. Is the US release date later, or why are these so hard to find?