I agree that it is important to be both a professional seller and buyer. However, I think the burden of professionalism falls mainly on the seller, especially since there are so many buyers that are new to the hobby and ignorant about what it costs to be a breeder. Calling someone a waste of time is pretty brutal. I would feel uncomfortable doing business with someone who would personally attack me if they felt like it was justified.

On the other hand, I will seek out anyone who is especially gracious to me and purchase from them on purpose. We are all new, vulnerable, and ignorant at some point, right?