Where can you pre-purchase PhotoPass?

[disneyeverything]

I have heard about paying $100 for PhotoPass and I was just wondering where can you do this? For my family I would love to be able to get lots of pictures, especially with all of us in it. 95% of the time I am missing from pictures on vacation!!!

Thanks

 

[GraceLuvsWDW]

http://www.disneyphotopass.com/previsitcdplan.aspx