Sosan shuttlecock in.. - Golden - Black - Purple - Green - Blue - Red I need to do some comparison...
Badminton Alley is an online store in the US and they carry some Sosan: http://www.badmintonalley.com/Badminton_Shuttlecock_Shuttles_s/2.htm
We have only black and purple in Finland. They cost 17 euro's (black) and 15 euro's (purple) if bought per tube, 15,30 (black) and 13,50 (purple) if bought 10+ tubes. 1 euro = about 1,25 USD. Black Sosan has usually had very good quality, purple varies too much.