Ya, the prices are sky high now (especially for the really good wheels). I remember back in 1969 when I bought my first set of Cosmic "mags" for my old Volvo 544 - the set cost $160 plus another $160 for Dunlop SP "radials". I was in shock for months over the price but one summer Sunday drive up to Whistler on that twisty road made the cost worthwhile.
I wonder if you can buy anything new in a single 18" aluminum wheel for $320 these days....