Does a BNIB D-Serial Datejust need to be serviced?

[Chachabah]

Hello fellow enthusiasts. I am considering purchasing a BNIB, never worn, D-Serial 116334 Datejust from a store that was once a dealer, and is no longer a dealer. It is everrose gold/SS with jubilee bracelet and pink stick dial. The offer is 20% off retail ($10,400) and the seller will throw in two extra links that I need to fit my big wrist.

Boxes, papers, tags all included. Does this sound like a good deal? If I am correct, a D-Serial watch is from like 2007. Because it has been on the shelf for so long, will it need service? Any other considerations considering the AD is no longer an AD?

Any advice would be greatly appreciated.

C