I've had pretty good luck finding some hard-to-find Moorcock for good prices on Alibris and Abebooks or Biblio as well, including a replacement copy of
The Swords of Heaven, the Flowers of Hell graphic novel he did with Howard Chaykin what -- 25? -- years ago, and at rather good prices. I believe that the British omnibi were from Orion/Millennium (at least, my copy of
The New Nature of the Catastrophe, the only one of the set I have, is); whereas the American set is from White Wolf/Borealis. The lists I have of each set are as follows:
British:
1.
Von Bek
2.
The Eternal Champion
3.
Hawkmoon
4.
Corum
5.
Sailing to Utopia
6.
A Nomad of the Time Streams
7.
Dancers at the End of Time
8.
Elric of Melnibone
9.
The New Nature of the Catastrophe
10.
The Prince with the Silver Hand
11.
Legends from the End of Time
12.
Stormbringer
13.
Earl Aubec
14.
Count Brass
and for some reason not officially part of the series:
A Warrior of Mars
American:
1.
The Eternal Champion
2.
Von Bek
3.
Hawkmoon
4.
A Nomad of the Time Streams
5.
Elric: Song of the Black Sword
6.
The Roads Between the Worlds
7.
Corum: The Coming of Chaos
8.
Sailing to Utopia
9.
Kane of Old Mars
10.
The Dancers at the End of Time
11.
Elric: The Stealer of Souls
12.
The Prince with the Silver Hand
13.
Legends from the End of Time
14.
Earl Aubec
15.
Count Brass
Keep in mind that with some of these, the contents are radically different (especially
Earl Aubec). Note also that this set does not contain the most recent Elric trilogy, as they were written after this set was released. There are some good websites devoted to Moorcock and his work; and from what I understand, he's also very good about interacting with his readers on them (or at least, those he's connected with himself). Having met the man a couple of times, I can say he tends to be friendly and to enjoy dealing with people (as long as they aren't rude, etc.).
Much of a Moorcock nut as I am, there are plenty of people out there who are much more into this than I, people who have some of the original pieces he did under various house names when he was working for Fleetway, his political broadsides, etc. (By the way, even of this sort of thing, the ones that I've seen are often quite interesting. Except for some very early stories -- the Sojan stuff, for example -- Moorcock has seldom written anything I found boring; and even there they improved toward the end of the set as he began to introduce his serious philosophical points, giving the stories more depth and texture.)
And, if you're interested, there's been a new edition of his
Wizardry and Wild Romance, a non-fiction book he wrote on fantasy. For lovers of the genre -- and especially Tolkien, with whom Moorcock has some decided differences -- some of his opinions may be abrasive, but they are interesting. And, if you can find a copy, Colin Greenland did a book talking with Moorcock about writing. (Moorcock is very prolific, to say the least; if I remember correctly, he wrote his Michael Kane trilogy in one week!) Any other questions you think I may be able to help with, PM me, and I'll get back to you as soon as I'm able.
(Do I hear a loud "Oh, God, Noooooooo!" from somewhere???)