Melchior's Fire - Chalker, Jack L

They call it the worlds of the Three Kings, a legendary star system laden with riches beyond imagining. Now, a band of seekers desperately in debt are determined to find the Three Kings--if the galactic underworld's repo men don't get them first.

Melchior's Fire 2002, Baen Books

ISBN-13: 9780743435833

Mass-market paperback

Melchior's Fire 2001, Baen Books

ISBN-13: 9780671319915