Most of the posts here are regarding RED FLAGS. These indicate warning signs that the breeder may not be someone you want to buy from. These come from the websites themselves. I find red flags to be proof enough for me personally and I run far away from them.
I would never buy a pup from a site that allows me to "buy it now." That's just a bad sign. It means they aren't even bothering to screen homes. Look I can just add it to my cart!!!
That's absolutely disgusting and deplorable in my book.
Good luck in your search. We can only educate people and hope they listen. If you choose not to that is your choice. No one here is forcing anyone to do anything. You are free to make your own decisions. However, buyer beware.