首先从房地产特性入手，即房地产位置固定性和房地产产品的异质性，分析房地产市场出现寡头垄断的可能性；
The paper try to focus on the regional oligopoly real estate market to explain the reason that caused the high prices.
房地产企业因其产品的异质性、稀缺性以及位置固定性等特点有别于一般商品，其营销手段更复杂，也更具挑战性。
The real estate product is different from the general commodity because of its abnormal, scattered and fixed characteristics. So its means of marketing is more complicated and challenging.
另一方面，更重要的是由于城市住房是一种异质性产品。
On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
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