I wouldn't do it - just too many irresponsible breeders out there who lie through their teeth about titles and having the dog checked before breeding etc. Sounds suspicious to me and those pups will end up in somebody's back yard on a chain or being bred when they're old enough to bring in some fast cash. You have no way of knowing what lurks in the genetics of those pups. JMO but I would steer clear of that.
I would do it in certain circumstances, but there are a lot of factors that would come into play.