The evolution of the cognitive radio network theory often presents economics-based methods and free market principles in the administration of network functioning. We present here, an application of the agent-based model in the case of an economy consisting of five primary users and secondary users (SUs) uniformly distributed in the linear region. We show that the price-based demand evolution and price competition play a significant role only in an "economizable" network loading band, while in both the low-loading and the over-loading state, the market rules fail. On the contrary, in the economizable loading state, the price competition, demand sensitivity and specific SUs' locations work well, underpinning the known economic rules.