赵先生认购了某房产公司开发的房屋,赵先生与该房产公司签订了房屋保留单,其中约定了认购单价、所购房子的面积和具体房间号、房屋总价、保留金数额。当天赵先生就支付给房产公司1万元保留金。可两年后,正式签约时,开发商把价格提高了很多。赵先生将房产公司告上法庭,要求按双方当初约定的房价签订商品房买卖合同。 Mr. Zhao subscribed for a house developed by a real estate company. Mr. Zhao signed a house reservation form with the real estate company, which stipulated the subscription unit price, the area of ​​the house purchased and the specific room number, the total house price and the amount of the retention money. Mr. Zhao on the same day to pay 10,000 yuan real estate company retention money. Two years later, when the official contract, developers have raised the price a lot. Mr. Zhao sued the real estate company in court, demanding that the contract of sale and purchase of the commercial house should be signed according to the house price agreed by both parties.