On 15 Aug 2003 19:35:29 -0700, David Hurwitz
Though it appears that Sikorski has the US rights for everything now, rights for individual works were held by different publishers at different times in different countries, so you should be able to find used copies around.
On my shelf I see various of the Symphonies published by Leeds (15), MCA (5), CF Peters (7), and Breitkopf (8), along with Kalmus (1, 10, 11, 14) and various Soviet editions (2, 12, 13).
The Sikorski editions are remarkably expensive. I bought the 8th recently (in London) for around $16. Now (at SheetMusicPlus.com) the Sikorski is $42 for 150 pages. What are they thinking? I could understand these prices for full-size (conductor) scores, but these are study scores (6' x 8.5'

. They probably didn't even have to pay engraving costs.
As a student I would figure which scores were cheaper to photocopy than to purchase. In this case, the score of the 14th Symphony comes out to 41 cents per page.
Regards, Eric Grunin