买卖双方可自由议定单位售价，但买家必须承担缴付补价的责任。
Flat prices are freely negotiated between the parties, subject to the inheritance of the premium liability by the purchasers.
买卖双方可自由议定单位售价，但买家必须承担缴付补价的责任。
Flat prices are freely negotiated between the parties, subject to the inheritance of the premium liability by the purchasers.
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