I'm really looking at this now. I've been saving for a front and rear Rideye 32 Gig set for $449.
Now that I do the math, purchasing two of these (for front and back) + two 64 gig cards + two battery extenders would be about $300- $320 prior to tax. That's a savings of about $130, but for products that have been discontinued.
Im going to sleep on this before getting out my credit card.