Not an expert or anything but assuming stats, procs and everything else are the same, then the difference in value is simply demand.
I think that when people start a new warrior on this server, they don't really research anything, so they ask around what gear they should buy and the usual answer they get is something like "just buy like a dusty bp, 55hp/5ac rings and dual SSOY and ur all set until late in the game".
This creates a increased demand for SSOYs, thus raising the price, because other weapons that are as good are ignored, as they're relatively unknown.
If i were to play a warrior, i would dual wield this:
http://wiki.project1999.com/Scorpikis_Claw_Impaler
Having both, that's +8 STR, +20 SV Poison. It starts to proc at level 30. The proc is 3 poison counters. The agro is insane. According to the warrior weapons agro chart, the proc (in terms of threat) is only beaten by the epic and some VP weapons. And they can be found for 1k for both, common drop off of HS.
Plus if you dual wield piercing weapons, you can get people asking why the fuck is the rogue tanking.