I’ve breed and sold puppies before. Mine are KC registered. I ask for a non-refundable deposit. Most people have paid this before even seeing the puppy in person, their choice. I’ll send pictures and videos on request. I’ve only had one who couldn’t commit after paying their deposit, they had a change in circumstances, they knew it was non-refundable and were fine with it.
The remaining amount is paid on collection of their puppy, I never ask for more money before collections, it’s massively wrong to do so. On collection, I’ve had people bring cash, others pay by bank transfer, the money goes in instantly, as long as the money is in my account, there’s no issue.
I have a contract that people sign. I have been asked to show the paperwork before collection but would happily do so. I give 5 weeks insurance. All the pups have been vet checked and had their first vaccination. This is standard practice.
I wouldn’t pay anymore than a deposit before collecting. Paying in full or more than the deposit, before the pup is ready is not standard practice, I have never done it and haven’t seen any reputable breeder do so either. Deposits are usually non-refundable, so you probably won’t get that back.
Personally I wouldn’t go through with it. I don’t like her attitude. Being snappy and avoiding questions is just wrong. As a breeder, you should be vetting people’s suitability, but it also works both ways. Buyers have questions, which need to be answered too. Buyers should also see how you are with pups and parents, how you treat them, how they’ve been raised etc, a breeders attitude does matter in the end. All my buyers were very happy.