I've never hear dof it to be honest. While each CD in the set has had a singular release at one point or another, making this a 'CV OST & Arrange Collection' of sorts, I've never seen or heard of a re-release. A good clue would be to check the company publishers for each of the CDs, and see if they're from different publishers or not. Very rarely, even though the source material comes all from Konami, will record publishers work together to bring a collection of their products into one.
That doesn't mean it has no value though. The question is; what kind of a pirate is it?
Its clear that the set comes with nice printed image CDs. This is no shoddy ripoff. However the biggest question here is. Are the CDs in this set, copies of the official CDs they represent, or burned off of internet sources. If these are disk copies, and not burned off of known internet sources, then we could have on our hands a full CD quality version of these sound tracks.
Why do I ask? Think for a moment as to the quality of the rips that can be found on the internet for these CDs, especially ones like Dracula Battle. Low 128kbps at most.
Crisis, you claim to have this set correct? For the good of the community, could you rip the arrange albums included in there at a high 320kbps and or FLAC?