My tanks 2000 x 900 x 600 - 1080L, Im guessing your stand would cost about around $1000, depends where you go tho some people charge heaps and some do some wicked deals.
$1500 for a tank seems a little high, you might be able to haggle on the price - compare quotes from other companys (not just in auckland) And see who can give you the best deal.
If you drop the height you could get away with using 10mm glass and that would drop the price by a couple hundred dollars