There is a way, somewhat complicated...but possible....You will need to root your device. This is for a Galaxy S3 Verizon model. I am not responsible for you damaging your phone....so please make sure to back it up before you do anything.
These were my steps.
Root Device -
How To
I used the stock rom that was provided in this tutorial.
You will need to edit the build.prop -
How To
I used root explorer from the play store for 3.99 to edit the build.prop...I used the verizon zip file (wallet-sgs3-verizon_telus.zip)
I noticed when i tried to load up the Google prepaid card, It looks like it gets stuck on "verifying your account with money network", but its just takes a lot of data. On 4g it took me a little bit over 5 mins, so you might want to consider connecting to wifi before you try to load up the google prepaid card.
I am NOT an android wiz. if you have any questions you should post them up in the XDA forum in the link above. This is just what worked for me. I do hope it works for you
Enjoy your free $10 :biggrin: