Trying to switch from x3 to x5 in Canada..Need some opinions..

[tnxgiv]

Hello. I got this brand new X3 3.0is M-pkged +premium last month. And it's just got 1k km on it. The retail price was 62k plus tax, and paint /leather coating and tire warranty(not transferrable to the new car) costed me about another 1.5 grands. But for some stupid and unexpected reason, I need to trade the car in for X5. So I took the car to dealer, and he said he will credit me for just 52k and of course, i was told that it's the best he can do.
Ohh, and the dealer said he'll give 2.5k off the x5 4.8i, which is a big discount for new X5 according to this dealer.
Had the car for just 1 month and put 1k km on it, and depreciation is more then 10 grands.What do you guys think about this quote I got?
Should I try different dealership in town? BTW I live in Vancouver.