@rjw63 You might want to check the price of that on Discogs, Thats the first four albums plus Green Desert which had never been released before that Box Set, the median price is being dragged down by a couple of outliers, if thats in good nick and they are all there with the booklet, thats gotta be worth about £50 and if you ignore the outliers the trend on price is actually climbing.
Phaedra is the album that came after those first 4 and was their first for Virgin, it was something of an accident, they were pissing about with a Moog synth they'd just got and had the tape running, they liked it and just added stuff to it, it kinda shaped their output for years after that
Thats the stuff of theirs I like the most tbh but I also think they are one of the least interesting of the bands from the Kosmiche scene. The best Album Edgar Froese was on was William Shatner's Learn To Fly