Looking at the available YJA sales history, this album has recently sold 4 times (all with obi), with the cheapest sale being 90,000 yen. One of these sales was a complete copy, with registration card and stickers, for 233,000 yen:
These prices seem very high, even as compared to other high-value soundtracks, including DKC 1 and 3. Why is that the case? I know "supply and demand": is the supply for this album unusually low, or the demand unusually high, relative to other albums?