I have it! I bought it before I saw the show in London. It's a great recording, and I prefer it to the original recording. I prefer the new material added for this production (expecially 'Mine, All Mine' - a fantastic, soaring duet between Edgar and Shelley) and I think the actualy recording is a little smoother too. I'd recommend buying it if it's not megabucks.
"Jane, I've been dealt a blow - I've been dealt a blow, Jane."