Buying strike dogs????????????????

Some very sound advice and opinions have already been shared here.
I just want to reinforce "give the dogs more time" since you have already bought and paid for them.
It definitely takes some dogs longer to accept a new master, alpha dog, owner, handler, or what ever you want to call yourself but eventually they will come around and start hunting like the did with their former owners. It may even take months for some dogs due to temperament and trust issues.
When they do come around I just hope its what you thought you were buying to begin with.
If not I guess you can put it in your "lessons learned journal" if the guy wont buy the dogs back.

Ive never bought a "finished dog" personally (cant afford what I would consider a finished dog!) but if I did it would be after I had seen him hunt with his former owner. That's the only way to see how the dog will eventually start hunting for you.