Should I continue to use a "Buyer's" Realtor?

[Alex Rossol]

Hi All,

I've just started investing in real estate with a Full duplex and a half duplex that I bought through my realtor. The contract that a signed with my realtor, states that all purchases in real estate that I get must go through him and he will continue to work on my behalf to negotiate and present offers? Is it usual to have an exclusive contract with a realtor? Or do real estate investor's usually just have a few go-to realtors they use interchangeably?

(I guess I am posing this question since I feel chained to my current realtor, and I preceive that I can't be as felxible in my deal seeking and buying)