You can contact Smith and Wesson directly,and when the handgun is received and inspected,this will generate a price for repair at there facility.
Medium
No such model in the S&W line.
Factory made, probably the S&W Model 500
S&W Model 14
50-425 usd
You can get a manual at S&W's website for free.
You must call S&W to find out.
57-69; you will have to call S&W to narrow it down further
You can request a owner's manual for free at S&W's web site.
100-500 or so
No serial number provided.
You can download or request one for free at S&W's website.