Teardown.com took apart a $1,500 pair of Google Glass and published estimates of the final bill of materials on Wednesday. The bottom line? Glass components cost an estimated $79.78, or a little more than 5 percent of its retail price. Google shot a quick statement to the Wall Street Journal, calling the estimate “absolutely wrong.” Teardown.com is not the first to take apart a pair of Glass. We’ve known what’s inside Glass since at least last June, when the second wave of Glass availability led two privacy-concerned engineers to take apart the wearable. What Teardown.com has done is compare individual parts to the wholesale component market and estimate the cost of the device as a whole — and they’re not the only ones saying that Google Glass is not expensive to manufacture. Last August, my colleague Kevin Tofel noted the components in Google Glass are strikingly similar to the Motorola MotoActiv smartwatch that came out in early 2012.