I recently purchased a 05 nissan xterra from the US, and when trying to ship it, a problem was discovered....it's windows wouldn't go up after it was rolled down. Right now, it's under repairs and i was told that in the case of a spoilt/broken/missing key, $500 would be required to replace it...how true is this? Also heard that it's expensive to maintain. For those who own the car....how is your car performing, are these statements true? Is it still advisable to ship it in or should i sell it and get something else?