I can't vouch for the source, nor whether you'll get what you pay for, but that's an obscene amount of money. $10 to ship a CD, that's absurd. At $319.95 they should throw in free shipping.
Here at NICO, we have Factory Service Manuals available FREE to members. Unfortunately we are behind in keeping the FSM's updated, and do not currently have any for the Kicks.
If you're in urgent need of the FSM you can get an access pass from Nissan to get it from them directly.
Online Subscription Rates:
1. One Year Subscription $720.00
2. 90 day Subscription $225.00
3. 30 day Subscription $75.00
4. One day Subscription $19.99
$19.99 to Nissan vs $329.95 to a stranger on eBay.