Proud owner of all 3 sizes in SS Security Sixes. I paid $235 for the 6" way back in the early 80's. I have put lots of rounds through all 3 of them and have yet to break anything, so I would not give a second thought to replacement parts. The only issue I have ever had with any of these is the ejection rod coming loose and the cylinder getting loose. A single drop of blue lock tight fixed that problem. I would not let any of mine go for under $500. With this in mind, buy it for what every you can talk them down to, then use it and abuse it and be ready to pass it on to a son or grandson when the time comes. Just remember that old man Ruger did not make any firearms to be collectible, he built them to stand up to years and years of steady use.

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"Tastes just like chicken"