Google Glass is expensive. You might want to try Google Glass before committing to pay $1500. That’s understandable. So Google is starting to offer a home try-on service for Glass, which will allow you to see which color and which prescription lens frame works best for you. It isn’t a full version of the device. Just something so you can judge what color you want.
This is mainly for those of you who already know that you want to buy Glass, but wear prescription glasses. You want to know how things look before you commit to buy, just like with regular glasses. Google will send you non-functioning Google Glass devices in Charcoal, Tangerine, Shale, and Sky, as well as all of the Titanium collection frames.
It works like this. Google will put a $50 hold on your credit card and you have 10 days to try out the various options, make your choice, and send it all back to Google. Again, Google will not be sending you $6000 of functioning devices. There is a phone number where you call to get your try-on units, but it is invite only and it is unclear how to get an invite at this time. At least you can try them out before you buy them. It’s good that Google is giving people that option.
Source Phone Arena