Here a copy of the Quotes I got from local dealer back when I was looking for cables... You'll notice that the prices have steadily gone up, so I would imagine they are slightly pricer now.
June 2008 Quote from local Dealer
6250405 PL Cable 8/8 pin 100m Black 6.60/ft
6250425 ML Cable 100m CL2 rated Bla 5.50/ft
6270122 ML Cable Black 1.5m 29.75
6270632 ML Cable Black 3m 19.11
6270711 ML Cable Black 5m 56.25
6270633 ML Cable Black 10m 77.99
6270142 ML Cable Black 20m 108.42
6270687 PL Cable 8/8 pin, Black 15.01
6270688 PL Cable 8/8 pin, Black 32.35
6270689 PL Cable 8/8 pin. Black 10m 47.54
6270696 PL Cable 8/8 pin. Black 20m 57.99
Nov. 2008 Quote
6270142 ML Cable Black 20m 131.56
6270696 PL Cable 8/8 pin. Black 20m 64.25
Jan. 2009 Quote
6270687 PL cable 8/8 pin, Blac 16.63
6270688 PL cable 8/8 pin, Black 35.84
6270689 PL cable 8/8 pin. Black 10m 55.93
BeoVision 4-50 MkII, BeoSystem 1, Zektor Switch, DTS box, BeoLink Passive, BeoVox Cona, BeoLab 1, BeoLab 3500, BeoLab 6000, BeoLab 4000, BeoLab 4, BeoLab 3000, BeoMedia 1, BeoMaster 5, BeoSystem 3 Type 9621