How do you trade items on ladder slasher, i see there are threads up with people offering items but how do you buy buy/sell them in the game?

like for instance if i put up an item on the forums and someone bought it, how would we go about the trade in LS?

you trade them via the marketplace : http://ladderslasher.d2jsp.org/index.php?g=1

you can either make a thread , wait for offers on the forum then seel it on the MP ( marketplace )
or you can put it on the MP and wait for someone to buy it there.

there is also a fee to sell items on LS

vouch m8