Does anyone in the USA know the names of Legitimate Bonsai Nurseries? There are some that mass produce their plants put them in ceramic pots and sell them as Bonsai online and charge a lot for them. Some of them do not pot their plants properly. Do these nurseries have to be certified to sell Bonsai. I do not mind paying good money for the real stuff, but do not like to be ripped off. Please let me know of your experiences.
I have no knowledge of bonsai nurseries in the USA, but I can tell you that even reputable bonsai nurseries in the Netherlands (and probably in other countries too) sell mallsai too. Guess they need to make a living and not everyone is prepared to spend a lot of money on real good material.
I think it is important to recognize good material before you start shopping. There's no certification (as far as I'm aware), bonsai is not a trademark, any shrub in a pot can be called bonsai, unfortunately.
Isn't there a bonsai club or society in your neighbourhood? That's often the best way to find your way to good material.