if you've got clip-ons and want a set that's shorter than the stock monster lines, i've got a set off a 996 for sale. i'm going to 4pad calipers so they no longer apply. $175 new. selling for $100 (includes shipping to you).
otherwise, check out motowheels.com for some good options.
After some homework, I had good luck with: http://www.revlimiterracing.com/braking/lines/lines.html
If I recall, my three lines (Brakes & Clutch) cost about $130 (US), then again, I have a single front disc. Otherwise the front alone should be around $90. -anodized banjos generally run about $13 extra per line.