Complex sentence: The books were first published by Headline Book Publishing Ltd between 1988 and 1999 (now all out of print), and are currently published as ebooks by Mushroom eBooks in 2002/2003, and are also available as paperbacks from Bladud Books.
Split into simpler sentences: The books were first published by Headline Book Publishing Ltd between 1988 and 1999. They are currently published as ebooks by Mushroom eBooks (2002/2003), and are also available as paperbacks from Bladud Books.