Try e-gunparts.com
No more than 50 USD
I paid $100.00 on GunBroker for a used one - the gun is in great shape but the bluing is pretty worn.
Depends on the revolver.
10-100 USD depending on specifics
depending on condition of your revolver it would be worth 775.00 dollars in 50% condition up to 1,000 in 70% condition.
It is worth around 200 to 600 dollar
Unknown brand
1.000
@ 50 USD.
100-1000 dollars.
If it is original, big bucks.