Don't buy a puppy from a petshop. Spend the time to find a responsible breeder. If calling MKA or visiting their website didn't turn up much you can always go down to the next confirmation show (there will definitely be some Papillon people there who can help you out).

Good choice of breed though. Papillons are beautiful and often full of character (my little girl is a REAL character, trust me). They are pretty low maintainance and only really need regular basic grooming to keep their nails and ears in check.
They can be stubborn at time, but as they are also very quick to become attached to their owner, this often doesn't stand too much in the way of training.

On top of that, when their ears grow out into a full "papillon" it gives such a soft and beautiful frame to a truly cute and expressive face.

Good luck finding your Papillon, take the time to find a really great puppy from an awesome breeder and you will have made a great start.