You should look on craigslist. You should search 4x114.3, 4x114, and 4x100. The Cube only fits 4x114.3 and many people shorten it to 4x114 and most rims have two different lug options with the second one being 4x100 and fairly popular. You can find a good deal on there, I got my rims for 200 and I sanded and repainted them.
i know the feeling .
the steel wheels and hub caps.
lol its dragging the looks down.
so i upgraded . http://www.nissancubelife.com/forum/index.php?topic=1516.0
how ever i hear you.
about the banging the bucks down.
for some new one's.
if you going to get used.
look them over real good.
before giving out the bucks.