They do seem to be all over the place on ads - thats what happens to many breeders who have "Euro" dogs. They think because they have a foreign dog they can capitalize on it. However not sure what you are looking for. You are from NH and these people are from Texas, I think. If you are looking for a European bred dog then I would by pass these people who seem to be connected with Playtime (BARF) and other not so well known European boxer breeding Mills.
Best bet if this is they type of dog you are looking for, and want to pay much less than these people are overcharging for a puppy - then contact
Jamie at Larsen Boxers - Boxer Von Larsen
Leslie at Schattenboxen - Schattenboxen Boxers - European Boxers - German Boxer Breeder in Washington State USA