This is rule I just made up. Do you all think it makes any sense? Example 1: I spent $3350 for 6 speakers (5 B&Ws and 1 Velodyne), so I should spend $335 for speaker cable. Example 2: Someone buys an HTB for $1000. Figuring half the money went for the speakers, they should spend $50 for cable. (That is, not just use what came in the box.) $50 would easily cover enough 12-gauge cable to wire the system, figuring around 50 = 75 cents a foot.