I had a quick look at adverts for this breed and I can see what you mean!
There may be some genuine offers/owners in there but if so they are rather well hidden. I would steer well clear of anyone selling a bitch with the words "due in season soon" or "puppies will sell for xx" or when selling a male "proven stud". All loud warning bells as far as I can see.
Are you unable to have a puppy at this time? If so I'd contact breeders and breed clubs as advised, some breeders may well know of possible rehomes that never come on the 'open market' as such. Dogs from
their owners would usually be placed through a network of known and approved contacts.
If you are willing to take a risk with an advertised dog you need to harden your heart a bit, be very very clear about what you are wiling to take on, and visit a few of these people. In some cases a telephone call might be all that is needed to exclude them. I'd be listening for the things they DON'T say as well as the things they do. There would be certain bits of key information that I would expect them to volunteer and I'd reject anyone that didn't cover at least 80% of this information unasked. If you feel you can trust the owner, and you like the sound of them, you are more likely to find a dog you like when you visit. Expect to be grilled by the owner. I'd be very wary of anyone that didn't ask me loads of questions. You want to get a dog from someone who genuinely needs to rehome
for the benefit of the dog and someone who will go out of their way to ensure that you are the best new owner for their precious pet. If I were rehoming I'd expect to meet you (and approve you) long before I allowed you to meet my dog. (Actually it makes me shudder to think about it and the truth is that I'd only ever rehome via my breeder and NEVER via an internet site. It would be like selling a child).
Good luck
Kindness is the language which the deaf can hear and the blind can see ~Mark Twain