Great pictures! Those are truly magnificent animals. I have never seen one in person so I can only imagine how giant they really are. Are people often afraid when they see them? I ask because even when I walk Binky now, some people are so skittish-and she's just a little puppy! Do you allow people to buy your pups just for a pet or do they have to have experience with the breed or need a LGD? (not that I'm in the market-I wish-just curious!) 
Thanks!
People react on them differently - come think they are cuddly, some are scared by the size. Dogs are pretty intimidating. And I don't just mean size.
When I walk an adult dog and I meet someone on the street who wants to talk - dog always position him/herself between me and another person. And during the conversation they are watching the person very closely, which makes people nervous. LOL I have to be very aware of my dog's "condition" during these street conversations, because simple offer of a handshake for some of my dogs considered to be the threat to me, which will trigger a reaction. Other dogs will be OK with a handshake, but not a hug (for example).
I don't sell pets in general sense of the word. They are working dogs, and they do guard whether you want them or not. Many people who live remotely in country settings are looking for these dogs to alert and protect. I had some NY policemen calling me because they wanted to make sure that the family is safe when they are on duty at night. I have no problem with no LGD experience in a buyer, but I am looking for a certain personality - responsible and dominant type.
I would not sell to a person with "soft" character, or to a family where the wife for example is submissive to the husband. The dogs are perfectly happy to obey the leader, but will try to take the pack leader's place if there is nobody there. And that is not pretty - it may mean the wife is not allowed to come to a bedroom when the husband is at work, or sit on a sofa....
The families with children - I will ONLY sell if they had previous LGD experience, because children are not capable of establishing correct "pack order" with one of these dogs and without proper guidance and control from parents they will end up on the "bottom of the food chain".
Any dog that is coming out of my house sold with a guarantee, contract and agreement that I will take that dog back anytime, anywhere and for any reason. My buyers do keep in-touch, and I follow up on the pups development and progress, helping out to solve any problems that may come about.
They are not aliens or scary beasts. LOL Just dogs. But serious dogs that require serious, responsible owners.