The backup camera became STANDARD on any LEAF that has the "charge" package when 6.6 KW arrived which means its standard on all 2013 SL's.
As you may have figured out by now, you can't get accurate info by reading internet posts, even on EV sites. The backup camera DID NOT come standard in 2013, and you COULD get it separate from Premium Package. Just accept it, already. Oh, and Premium Package WAS an option in 2013. I have it, many others have it. Sheesh.
2013 "Brilliant Silver" SV with Premium and no QC, a 2009 Vectrix VX-1 W/18 Leaf modules, and 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.