That depends entirely on what you want the car for.
Before buying my white GTR i was intending to look at a black one the dealer had had...Blitz Nur Spec R catback, FMIC, aftermarket rims all already included. With a GT-R...youre not gonna get your average buyer looking at buying one. Its not a case of...oh that new Hyundai i30 looks good...but theres also this GT-R too...
Its not like that.
The majority of buyers interested in a GT-R, while stock is preferable for some because then they can do their OWN modifications, Pre-modified GTRs have their calling in saving dollars in parts and labour for the new owner - because its already been done.