This is George. He came from preloved. He was 3, so not from a puppy farm. He was just too playful and too needy for an elderly couple and their autistic daughter to cope with. They looked after him, but only walked him 200 yards a day. He needs about 4 hours exercise and play a day really.
Make sure the dogs been chipped, and had its jabs. Buy the seller – see the dog in it’s current environment and see how it behaves, look for evidence of destructive behaviour (unless you’re prepared to accept this and work with this) make sure it’s house trained. Ask to take it for a walk with them, see if it’s good off the lead and comes back. If you’ve got kids, take the kids with you, see how it reacts to them. If you’ve already got a dog, take it with you, see if they’re likely to get on.