Thanks for the info Sidwynder. I must have misread the EBAY description. Even for 2cc, I was disappointed in how fast it was gone. Oh well...
The yellowed lights at least cleared up. They didn't turn clear and colorless, but were clear. That was nice.
On the '06 Prius, the lights had previously been sanded and treated. I didn't expect much there. However, on the '07, there has been no previous treatment done. The spots are like white clouds on the lens. It took probably 50% off, but left the rest. Even after a repeat treatment, some was left. It seems to reform very quickly. It doesn't look or feel like it's peeling and it definitely is not yellowing at all. I'm really puzzled as to what is really happening. I wonder if I need to reseal after applying the ALR, even if it has not completely removed the cloudy areas.