Soft cover:
Book I — 352 p. — 16 euros
Book II — 352 p. — 16 euros - ISBN 2-7368-0007-9
Book III — 352 p. — 16 euros - ISBN 2-7368-0014-1
Book IV — 384 p. — 18 euros - ISBN 2-7368-0018-4
Book V — 384 p. — 18 euros - ISBN 2-7368-0020-6
Book VI — 384 p. — 18 euros - ISBN 2-7368-0026-5
Book VII — 384 p. — 18 euros - ISBN 2-7368-0026-5
Book VIII — 416 p. — 18 euros - ISBN 2-7368-0033-8
Book IX — 448 p. — 18 euros - ISBN 2-7368-0037-0
Book X — 608 p. — 19 euros - ISBN 2-7368-0040-0

Bound cover:
Book I - 21 euro
Book II - 22 euros - ISBN 2-7368-0008-7
Book III - 22 euros - ISBN 2-7368-0014-1
Book IV - 22 euros - ISBN 2-7368-0018-4
Book V - 22 euros - ISBN 2-7368-0020-6
Book VI - 22 euros - ISBN 2-7368-0026-5
Book VII - 22 euros - ISBN 2-7368-0026-5
Book VIII - 22 euros - ISBN 2-7368-0033-8
Book IX - 22 euros - ISBN 2-7368-0037-0
Book X - 25 euros - ISBN 2-7368-0040-0