Hmm, I'm not the best Raff expert, but maybe some more familiar people can confirm/deny my assumptions:
Is that typical pitcher shape for a raff, I always thought they were much more pronounced, even as seedlings.
The peristome seems pretty ridged, I don't know if that's usual for a raff especially as a seedling.
I dont know though! I could be wrong onboth counts. Either way, if it is pure species, that could be a cultivar of some sort, I love reddish nepenthes leaves.