At 3:57 EST it's working fine for me.
14 karma · joined April 15, 2012
The 8GB seems to be consistently in stock, advertising a 4-5 week shipping period. It is possible to add this one to your cart consistently.
EDIT: Now getting a generic Google server error page: "We're sorry, there was an error. Please try again later."
http://http//instagr.am/p/MHDHSsGAC7/
All the links on the page seem similarly unusable.