If it feels wrong, walk away. Don't be suckered in.
Lab pups will all have short hair; the long haired pups don't sound like lab pups although it is more than possible for 2 black parents to produce a mixed black/yellow or chocolate litter.
I would run a mile from the breeder you describe. It sounds very like a puppy farm seller.
If you want a reputable Labrador breeder, there are some fabulous, committed ones about. Avoid small ads and contact the breed society - there'll be a local branch.
Go to this site and read Charlie's story. I know Charlie - he is heaven on a stick but he has had an awful start. Read carefully the health tests a good Labrador breeder should have available for BOTH parents.
Well we have been looking at getting a second dog since our last died at 15 and have been looking round rescues but not found anything sutible for a year now I happened to see a local ad for lab puppies and got in touch with the woman.
So we get there find its a small flat with 2 labs living there pups are tiny only two visable they don't look well we are told there ready Sunday at 6 weeks(I looked online and think they look more 3/4 weeks) the two are a long haired golden and black short haired girls both very quite and apparently on pedigree chum now. My partner asked when I was out of the room were the other pups were and they said they'd gone already. . We then find out mum is 9 surly too old? We said we would talk about it and get back to them. Then later in I see those two and another one for sale again Butwe were told other pups already left?
On one hand I want to rescue the poor animals take them to the vets and rehome the others myself as I feel like I'm letting them down leaving them on the other hand I don't feel I should be contributing to this type of breeding. Would any animal agencies care if I phoned them?