this guide should explain how to trade ladder slasher items:
http://forums.d2jsp.org/index.php?showtopic=8108466&f=272it is always done via market place.
you can open threads in the trade forums here:
and when someone buys your item you discuss via pm or messenger when you put this item on the market place and the person buys it.
you need to reach at least level 71 to do the mq.
its based on luck, not on the gear, but you have to find out what is exactly is.
you receive guild points and can unlock new characters if you pass, here is the table:
Guild Points Explained
Fail -> No Character Unlocked -> 1 Guild Point
Feeder Class -> Samurai - 2 Guild Points for a Pass
Samurai -> Paladin - 5 Guild Points for a Pass
Paladin -> Monk - 6 Guild Points for a Pass
Monk -> Ninja - 10 Guild Points for a Pass
Ninja -> Warlock - xx Guild Points for a Pass - unknown at this time
Warlock -> Headhunter -xx Guild Points for a Pass - unknown at this time
Headhunter -> Alchemist - xx Guild Points for a Pass - unknown at this time
Alchemist -> Reset Season - 100 Guild Points
Note* In Hardcore The Guild Points Are Doubled.