Not really. In your case value is in the crit range of the weapon when it comes to those with crit based effects. You offered up a blunt banisher which only crits on a 20 (19-20 if IC: Bludgeoning is taken) and were looking for +2 tomes, large ingredients, tome/shield pieces, or plat (and I'm guessing by "plat" you meant > 100k pp). There is the matter of "attempting to get the best price possible" and then there is reality. How often do you see blunt heavy maces/light maces/morningstars getting traded here for that kind of stuff? Exactly, you don't.