How much did it cost you to rescue a dog? Did you have to pay for any of the shots/vaccines and first month's heartworm? Were there any unexpected costs?
It actually depends on a lot of things like your country's location and the dog shelter as well as the sex of the dog.
The last dog that I had rescued, it cost me approximately $350.
Over here you can usually adopt a dog and pay a contribution to the rescue center that you use. All dogs are usually already given their injections and also spayed or neutered as well before they are rehomed as well so that is all sorted when you choose to rehome. Many tend to give a very generous contribution to the rescue center as well.
I wouldn't really know because I have not rescued a dog yet. I know those who are constantly doing this spend an a good amount of money to rescue those dogs and probably adopt them.
I don't know how much it is for the cost of a rescue. Every rescuer knows that there are lots of things to pay for, it can be a generous contribution or for the sake of the pet.