The prices for Leica lenses above seem to be a bit out of touch with reality.
Newer Summicrons run above the $1k mark but DR & collapsible are common from $400-$500. Similar prices on bodies too around $500 gets a user, better condition=more$$$
On the Chicago CL right now there's a 50/2.8 collapsible Elmar with a recent CLA for $350.
By the same token a Rokkor 40/2 at $700?