[CR]inexpensive single speed cranks?

(Example: Framebuilders:Rene Herse)

From: "Marty" <bimmerboym5@cox.net>
To: <classicrendezvous@bikelist.org>
Date: Wed, 10 May 2006 23:14:47 -0400
Subject: [CR]inexpensive single speed cranks?

I'd to spend hopefully less than $50 on a 165mm crank, either strict single or a suitable double that can easily convert. where to look and
what to look for?
THanks