I have a damascus & pearl handled CQC6, it was about $2,400 & I thought it was a fair price. It would likely fetch more now. As a wise man (my father in law) once told me anything is only worth what someone else will pay for it.
Emerson's are a piece of knife history. They are well made, but of older design so from that point of view hard to compare to newer designs. Is it as nice as a Smith, Lightfoot, Carson, Terzuola or several others no. Do they have the wide recognition no, but Smith does for his damascus pieces which may be the best right now & Terzuola has developed a classic tactical knife in his ATCF series.
Would I carry an Emerson? NO! There are many better tactical folders to carry. Am I glad I have one - yes! My opinion on classic tacticals from well established makers (whose prices remain in this world) to carry & use...look at JW Smith's frame locks they are awesome, any of the Vanguard knives from Les Robertson or any knife from Lightfoot, Carson, Terzuola, Ralph, Mayo, RJ Martin, Tighe, Viele. There are others for sure, but I own each of the above & can speak for them.
My 1st recommendation is buy & carry a knife you feel good aboud, you like & feels right in your hand. Stay with good materials for a using knife - titanium & carbon fiber will last forever. For display knives anything goes, but keep them well oiled & humidity controlled.