The first one is a self-published DVD retail of ASA: A Space Adventure. It is more or less the same version than the one on Desura and GamersGate. The DVD is not protected, you can make copies and share them with your friends and family.
However, I would recommend not purchasing this DVD today, as tomorrow I will make a major announcement that could influence on your decision!
The second one is a kind of artbook gathering most of the backgrounds from ASA, with wireframe views comparison, some work in progress and other pictures. The book contains almost no text, except for a preface in english, which summarizes the different steps of the project.
This book is quite expensive because of self-publishing costs, so you should probably buy it only if you really enjoyed the art of ASA.