Sorry, my work pc doesn't have sound so I can't hear the actual video. Does this track sites other than Amazon, or is that just the demo? Also, is there an es

Sorry, my work pc doesn't have sound so I can't hear the actual video. Does this track sites other than Amazon, or is that just the demo? Also, is there an estimate on the pricing for the premium service? Overall, I think it looks pretty clean. But I would probably add just a bit more information on the main page. I see it's mostly in the video, but it would be nice to get pricing details, description of exactly what things you can track, etc.. Good job though :)