If you are planning to buy one of those google glass device, be prepared to get google wallet account whether you like it or not.:-) This is because you may not be able to buy google glasses in other ways except by using google wallet. In addition to that, even if you are trying to gift the google glass to someone else, the recipient would require to have an account with google wallet for him/her to receive the support from Google.
To add to the above, a person owning a google glass device also needs to maintain his/her google wallet account to receive after sales support.
The information can be further found in google glass terms and conditions page. Following is the screenshot.
To me, this looks to be the Google strategy to kill two birds with one stone where, by doing good marketing of google glass, they are also going to propagate the widespread usage of google wallet. And, who knows in future, they also start charging cents for maintaining google wallet. Its about big money they are envisioning to make in future.
Personally, I am not a fan of using online wallets, be it google. However, this very clause of google glass terms and condition would only end up forcing me to use google wallet as I would surely like to try google glass device. Only time will tell if this would fly with a normal user and if google would have to relax on this term and condition in relation with “must-have” google wallet.
So, get a google wallet free with a google glass device!