Just thought I'd make the folks that have been hankering for one, aware. They had a couple stainless ROA conversions for $210. If you have a ROA, you can't just go and get another for less than a conversion cylinder... They were gone a half hour after I posted this, so I hope one of us scored on that deal.
By the way, from my observation over the years, the Colts conversions go on sale first, then the Remington 1858 conversion will a few weeks to a month later. So if you are looking for a new conversion cylinder, keep an eye out.