I've also found Polish covers of the first three books when I searched for their titles listed on Wikipedia. The four books in the Hungarian Baby-sitter klub series have the same cover pictures as the original ones, only their cover design is different.
You can also see the new French editions of BSC books, illustrated by Karim Friha, on the site of Gallimard Jeunesse. If you click on "Feuilleter l'ouvrage", you can see some pages, including the portraits of the seven members of the club. From Amazon.fr, it seems the sixth and seventh book might be re-released on June 2nd.
By the way, in #12: La nouvelle amie de Claudia, Ashley Wyeth is called Cynthia Hopper, and the cover artist, Philippe Munch, also shares a last name with another artist.
The Complete Guide to Janine Kishi
The Complete Guide to Jill Henderson
The Complete Guide to Carol Olson-Schafer
The Complete Guide to Charlie Thomas
If anybody has any requests for a character, please let me know! =)
I'm moving and probably don't want to take my BSC books with me if I can find them a good home. I've had some of mine for 20+ years and some date back to my sister's childhood 30 years ago so I don't want to just give them to an op shop. A few years ago there were several Australians here - anyone left who would want my collection?