Scales / Shop that allows you to weigh items..

[Synthesis]

Well maybe you helped changed my fucking mind.  Isn't that the point of arguing?

[Qzzrbl]

No need to get testy. 

[Twilight]

May have to do with the saving of the inaccurate values when you actually use the value skill on something, as opposed to getting values when you list.  I haven't had the value skill in awhile, so not sure they save like actual use of the skill does (from what I have read, recent change).  Thus, like on containers, you would be able to use it multiple times on the same object and figure out what the true value was most likely.