This item was never released as a physical product but instead was made available on the publisher's website as either plain text or rich text format files zipped together with individual pictures of all of the monsters. The book was originally intended for print release, but the Savage Coast line was canceled.
Description for the publishers website:
The SAVAGE COAST MONSTROUS COMPENDIUM APPENDIX assembles new creatures with abilities unlike any found elsewhere. These creatures dwell in the lands and waters of the Savage Coastnan area of hardship and swashbuckling adventure, of an ancient curse and powerful Legacies.