I was in a waiting room today and read a article on this subject. It said you must be very careful in your wording when you place your ad in selling a puppy. For instance, if you simply state" yorkie puppys for sell for ($this amount) a person can come in and pick any puppy it wants for that price.(legally) It said something on the effect of it being worded as a contract. Im not sure, but it said to never specify the price in the ads and to state that YOU the seller, have the right to refuse a sell for any reasons.That it would keep YOU safe from would-be bad folks.
I'll have to see if I can remember the name of the magazine I was reading...Kennel...something

sorry dont remember