Some other great sites:
Synphonic:
http://synphonic.8m.com/
Laser's Edge:
http://www.lasercd.com/Merchant/lasercd/
Kinesis:
http://www.kinesiscd.com/
The Artist Shop:
http://www.artist-shop.com/
if you still have any money left after visting these guys, let me know and I'll give you some more suggestions. But these guys have supplied probably 90% of Aural Moon's harder to find stuff.