personally, I think that price is high, especially since you have to pay taxes at a dealership.
I know in Alberta, we do not have to pay taxes on a private sale (do you in Ontario?) bt I know the x5's are cheaper out here and not as much of a rust issue here like you can see there.
i'd keep looking

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I swear, my cars are like a girlfriend.
Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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'91 850i
'05 X5 4.4i
'09 Clubman S