 Harga adalah sejumlah uang yang diminta,ditawarkan atau dibayarkan untuk suatu barang atau jasa.

 Biaya adalah sejumlah uang yang dikeluarkan atas barang atau jasa atau jumlah yang dibutuhkan untuk menciptakan atau memproduksi barang atau jasa tersebut.


 Nilai adalah Konsep ekonomi yang merujuk pada hubungan financial antara barang dan jasa yang tersedia untuk dibeli dan mereka yang membeli dan menjualnya. Nilai bukan merupakan fakta, tapi lebih merupakan perkiraan manfaat ekonomi atas barang dan jasa pada suatu waktu tertentu dalam hubungannya dengan definisi nilai tertentu.

 Pasar adalah sistem dan atau tempat barang dan jasa diperdagangkan antara pembeli dan penjual melalui mekanisme harga.

Ciri-ciri dari nilai :
 Bila dibutuhkan
 Ada permintaan
 Ada kelangkaan
 Dapat dijadikan sejumlah uang




Price versus value
It is important to distinguish between Market Value and Price. A price obtained for a specific property under a specific transaction may or may not represent that property's market value: special considerations may have been present, such as a special relationship between the buyer and the seller, or else the transaction may have been part of a larger set of transactions in which the parties had engaged. Another possibility is that a special buyer may have been willing to pay a premium over and above the market value, if his subjective valuation of the property (its investment value for him) was higher than the Market Value. An example of this would be the owner of a neighbouring property who, by combining his own property with the subject property, could thereby obtain economies-of-scale. Such situations often arise in corporate finance, as for example when a merger or acquisition is concluded at a price which is higher than the value represented by the price of the underlying stock. The usual rationale for these valuations would be that the 'sum is greater than its parts', since full ownership of a company entails special privileges for which a potential purchaser would be willing to pay. Such situations arise in real estate/property markets as well. It is the task of the real estate appraiser/property valuer to judge whether a specific price obtained under a specific transaction is indicative of Market Value.