Few collect Ruger revolvers. There are some fairly rare or hard to find models, but still few collect them purely to collect.
I personally have no interest in collecting anything that Ruger makes. Maybe in 20 years or so, there will be a lot of Ruger collectors. I'll concern myself about it then. I am not going to hold onto a Ruger revolver intentionally as a collector piece in hopes that I might make 30% in 10 years.