DealExtreme: $14.00 E27 6W 6-LED 540-Lumen 6000K White Light Bulb (85~265V AC)
That is very tempting, 6W at 90lm/W for $14 shipped. Shame most of the light fittings in this house are bayonet instead of edison screw. I might buy one and see if it's worth the hassle of replacing fittings.