They went 5 dollars more expensive and removed the 10% discount just to give you a 5 dollar certificate? so you're paying 5 dollars more to get 5 dollars off
If you install an NSP on Emunand then there will be no logs from this happening on original firmware, if you have stealth mode enabled (which is enabled by default by SX) then these logs from emunand also wont be send.
This means you can install nsps etc without the logs visable to OF or get...