I called Lexus as well, the cost of just the glass is 330$, the entire assembly is 400+. Sounds like they have got us. I did find only one company on the internet, www.internetglassnetwork.com. They offer glass only for 21.95, convex. They say apply over self dimming, not sure if that means the glass must be somewhat in tact to apply their glass over it? Not sure I want to try and take the backing plate out in case I break any of the clips. In that case, I am out the 330$. I like the idea of just applying new glass (even if it is not factory) while backing plate is still in tact.
Thanks for the suggestion