Hi,
I thought this might be of interest to anyone out there considering buying a grey import Nikon body or who has done so in the past or who owns a D750/considering purchasing one new or second hand.
I recently purchased a Nikon D750 body from DWI. Fairly smooth experience apart from the PayPal address verification step which is unusual and delayed shipping a little. I still got the camera very quickly mind you! No issues with paying any import tax.
I'm loving this camera, however, they are subject to an internal flare issue when shooting in high light situations and directly at the source of light. Nikon's response has been very good, unlike previous defects on recent bodies. More details on the issue including a serial number checker and how to identify when buying a used one if it's been fixed:
http://www.nikon.com.au/en_AU/service/service_advisory.page?…
Although this doesn't impact many (if any) of my shots as I don't normally shoot this way, if I don't get it fixed, it could affect the resale value. Also, how frustrating would it be if you got that perfect shot and it was ruined by the issue?
Therefore, I contacted Nikon Australia today to find out if they would fix this for me, even though it is a grey import. They confirmed they would, as it's a global service advisory. They said they would email me a courier request email form. Good news!
I'm yet to receive the form, but will keep you updated with how I go. They estimated 2 weeks to fix the camera. However, I expect a little longer if there is a backlog!
Tl,dr: bought grey d750, subject to flare issue (link above or Google), Nikon Australia will repair(!), waiting for email to request courier.
Nikon are generally pretty okay with grey imports if it's an actual camera-wide fault. I had a similar experience with the D600 and the oil spots issue. They fixed it pretty quickly and without hassle despite not being Australian stock.