Sounds like you got a keeper! They tend to go from $400 to $575 depending on where you look. I bought my 4" 25-5 " Big Colt" for $375 used. I got lucky. I love mine and as long as you are reasonable with loads, yours should last to pass on to grandkids. Mine is my #1 woods companion. I have even shot it in some IDPA revolver matches. I can' t say enough about it!
Enjoy!
Dave in Idaho