jade mace I have bought and sold (at least 3x for both buy and sell) for 1k-1100 several times in the last 9 months as I've played some alts.
I have yet to see lamentation anywhere near as cheap as JM (average price closer to 2k).
As for the rest of the weapons, price tracker on wiki is mildly useful for that sort of thing.
Prices and quoted availability reflect the blue server.
http://ahungry.com/eqauctions is also a good reference for more recent sale (and buy) prices within the last 24-96 hours