from the information you provided, it definitely doesn't sound like a great deal, IMO. Automatic climate control comes with the premium package, so if your climate control is not digital, and the seller is claiming premium package on the car, something's not right. Xenon headlights was a seperate option not available as part of any package.
Another way to tell if the car has premium package is if the rear seats have power recline or not.

http://cgi.ebay.com/ebaymotors/BMW-X...spagenameZWDVW

Look at this car on ebay. This car is equipped with premium package (leather interior, auto climate control, power rear seatbacks, 8 function on board computer(on the radio you would see BC next to the clock button, as well as a different instrument cluster, etc.), cold weather package (heated seats and ski bag), heated steering wheel, rear climate package (rear privacy glass, rear sunshades, and rear fan control), Xenon headlights (look for the "hole" in the middle of the low beam if you're not sure).

do you have pictures of this car you're looking at?

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