成交價一定是市場價格

this is the definition of market value.

your example actually is a good example to explain "market value".

market value is not real value.

the antique you mentioned has a good market value, but has a 0 real value. once people knows it is a fake one, its market value goes to 0.

market value changes too. sometimes it changes within a second.

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• agree -thornbird888- ♂ (0 bytes) () 06/03/2012 postreply 16:53:23