In the UK at the moment there are at least 5 people wanting every single puppy. My own enquiries list numbers 201 and I haven't bred for some years. Heaven alone knows what the totals really are.
Bitches are bred during their single annual season, which, in the Northern Hemisphere is between September / November, with puppies whelped November / January. Thus this winter's crop of pups are leaving the nest now or very soon will be - to people who got onto waiting lists back early last year.
This forum is not a puppy sales forum. But I have repeatedly said I will send email addresses of the three Breed Club secretaries to anyone who emails me privately.
Just as a matter of record, the same situation prevails almost across the Continent. There are many litters being born in the erstwhile Iron Curtain countries where many breeders ARE health testing the parents for at least Fanconi and PRA. However many aren't.
Yes, spread the net wider than the UK, but do take care you ensure the parents have been health tested, see the certificates ('Clear' in Cyrillic script looks like NN ! 'Carrier' is NM or MN, I don't have one to hand right now).
Basenjis are worth waiting for -