Bryan,

Best bet is a set of SA alloys. They go for $350-$700 a brand new set of four
-- mostly in the $600's. There are a few aftermarket alternatives from
Vanagon specialty vendors as well. I think VanAgain.com offers a custom. GoWesty.com
offers a Mercedes 8-hole look-alike too.

If you want to use wheels from other vehicles, consider some used by fellow
listees. You can see a few examples at:

Vanagon Cafe Alternative Wheels

Cheers,
BenT