American Musical Supply offers the Gibson Pure Premium Guitar Instrument 18-Foot Cable in Dark Purple for $29.99 with free shipping. (zZounds charges the same.) That's $76 off list and the lowest price we could find. It features 24K gold over nickel plugs and oxygen-free copper conductors. It's also available in a 25-foot version for $39.99 with free shipping. (Again, zZounds charges the same.) That's $90 off and the lowest price we could find.
None of these moves requires a big investment, and they all can save you money.