Even if he has been vaccinated, if you have no papers the vets will probably want to do him again if you have no proof. You can actually have tests done to check his titre levels for some vaccinations, but this will probably cost as much as getting him done anyway.
As above, ask the lady which vet vaccinated him, although I cannot see why she would not have had any paperwork.
I suspect he has not been done, in which case it is better to get him done anyway rather than risk it.
Dare I ask if his parents were eye tested or hip scored?
It is a case of getting what you pay for, but please do not blame all pedigree dog breeders if something should go wrong. Reputable breeders do all the necessary health checks which is why you pay more in the first place. This can turn out to be false economy if you end up with a dog that has health problems.