Why Do Some Realtors/ Agents Avoid Submitting Low Ball Offers?

[Lamont Mitchell]

It seems that most realtors/ agents I've worked with avoid submitting offers below market value even when the comps prove why I'm offering a certain amount. According to California law, aren't all realtors/ agents suppose to submit any and all offers on the behalf of their clients and isn't refusing to do so... breaking the law?