I still have my original T-Wires (Not for Sale - sorry!) and i also have a pair of E-Wires. Both the lenses on my E-Wires are pretty scratched up. I've had them since 1999 and were my everyday pair. I went and contacted Oakley HQ about seeing if they had any spare parts and unfortunately they do not. The only thing they offered me was a trade in where i get 20% off a new frame of my choice if i send in my old E-Wires. Not worth it if you ask me.
Then I heard about Visionary Lenses (http://stores.ebay.com/visionarylenses) and found them on Facebook. VL told me on a Facebook inquiry that they're planning to have E-Wire lenses available sometime this summer.
If you don't care that they're not original Oakley lenses, this is a great alternative. Look them up and see if this could work for you.