the cost of maintenance isnt what will get ya, it is finding someone that knows enough about the VX to tackle it that will get ya. As you can find out in any number of threads, good mechanics that know the ins and outs of a VX are rare.
However, they are not that expensive to maintain thanks to www.isuzuparts.com You can find literally any part of your vehicle on there. If something goes south, you can get what you need and probably tackle it yourself. Failing that, a mechanic can take care of it for you. Just search the forums though, chances are, someone here has had the same problem and posted a "how to" for your mechanic to follow.