Dog1 , I would suggest watching the classified ads on many of these sites.
www.gunsamerica.com is bound to have one. Since it's BP gun they can ship it directly to you.No need for a dealer to transfer it.That will save you some money right there . I might suggest another site that could possibly have one in the classified ads section. www.rugerforum.com
The Ruger OA's are nice BP guns.I never tried one with the fixed sights.I prefer the S/S adjustable sighted model and the longer barrel.
Ruger Redhawk