I've seen a lot of dirty tricks to pedal a junk dog myself but I'm not a dog jockey, When I was younger and first got into hounds I got burned a lot, many tricks pulled on me and I learned a lot of expensive lessons and knightstockterrier I'm sure that's how you knew all that as well.
One thing i've learned in life is there are more sorry dogs out there than good ones and it's way easier to just be honest. I don't sell dogs and don't buy grown dogs that's how I stay out of trouble on both ends