Not really worth the time or money. If you have to have it done, let a gunsmith do it.
Your Hi Standard snub nose revolver is valued at between 40-190 dollars depending on overall condition and a good bore.
Depends on who made it, etc., could be 50, could be 5000
Requires professional appraisal.
It should be.
Not necessary for normal cleaning. If you just have to, find a gunsmith and ask for help.
Handguns are illegal in Australia without a very stringently-policed special permit.
Could be anywhere from $100 to over $1,000, depending on WHICH revolver, and it's condition.
100-400 USD
You will have to call S&W
About $250. May be more or less, depending on condition.
50-500 usd
Made by Charter Arms. Not much more history than that.