My question involves business law in the state of: Hawaii

Hello,
I want to carry a company's products but they have a supplier in my area and will not sell me items at wholesale.
However, the product is so popular, I could afford to take a loss and buy it at retail and resell it. I do not have physical store just an online store.
If they see I am selling the items or if the other suppliers tells on me could they make me take it off my site?
Is there any work around to this? Basically I need this item in my inventory or I will go out of business anyway its so popular.