Stockhausen* Prozession value

The catalog shows a few different versions of *Prozession* by Stockhausen. The vinyl LP version, "Stockhausen* – Prozession (Electronic)," has a used sold price of $117.82 [1]. There is also a version listed for "Stockhausen* – Prozession (For Tamtam, Viola, Elektronium, Piano, Filters And Potentiometers)" with a used price of $20.64 [2], and a different LP version, "Stockhausen* Candide – Prozession," is listed at $8.70 used [3]. The other two listings are unpriced in the catalog.