Problem with my sensei
Hello, I am a fourth kyu aikido student. I am having problem with my sensei (at the age of 50,3rd dan). I have started to think that he is not a good instructor. First of all, he always speaks. He shows a technique, lets us practise twice or three times, then keeps speaking and speaking. Secondly, he always criticizes other dojos and senseis, tells that as for him "most of them are bad and our dojo is good....." And finally, he demands money unnecessarily, tries to sell things (bokken.....) much more expensive.
All of these behaviours of him have made me think that he is not a good teacher. And day by day, I have started to lose my trust of him. What should I do?. Should I change my dojo? (that I don't want to ) or be patient and wait? ... or what else?