As far I know

There is no annual service.. Its depend on mileage
i don’t know how much u earn but it is really expensive comparing with other cars

Dont forget u r paying for the name "brand" !!

The break kit for 4 wheels will cost 7000 QR
Battery 1300 QR
Oil filter around 800 QR each 10 000 km
Spark plug around 1200 QR
Those prices for my Cayenne S I don’t know for other types
My opinion, if it’s brand new, 0 mileages go for it and sell it just before warranty expired.