Sure you are. I won't go into that I guess.
As for your initial question, I think it is both allowed and ethical. That's called business. Businesses always try to offer better deals to their competitor's clients in order to win them. That's pretty normal and there is nothing wrong in it.
Now, if you offer something more unique and valuable than these competitors, then you have nothing to be afraid of. Your clients won't choose some low quality managers just to save some money. But if your competitors are offering same quality of service as you do, then you should better prepare yourself to either lower your price or provide more quality to your service. I guess other people will also say the same to you.