Hot new google powered products.

Cool new data overlay glasses from google. Add more layers to the world you see. Project google maps and other interesting factoids over the world you see.

How much do they cost: Nothing. The revenue would be generated by the highlited commercial items of interest aka realtime overlay ads. E.g. The little mom&pop coffee shop down the street is highlited when you search for "coffee".
Of course you are talking to yourself all the time and thats the reason for strange colors of the shades.