Always the safety and security of the pup must be considered. If there's someone out there who is willing and able to give a dog a happy, loving and stable home... then why not?
What I don't agree with is people trying to recoup costs or purchase fees on a dog that is being re-homed. If you need to find him or her a home, then the home they go to should be the biggest consideration, not making a few bucks. That kind of thing angers me