greetings brother
well you trade in one of these forums, just pick whichever you are playing
https://forums.d2jsp.org/forum.php?f=369look around and see the prices so you have a general idea of how to trade. also in some games using jsp is classified as rmt and is bannable so you have to use certain workarounds like putting a random item in the trade window or whatever, not sure about d4 cause i dont play it, but click on a few trading topics and you will get an idea of how it works
or wait here for someone who plays to reply
!
theres ofc as you asked duriel runs for ingame gold, those are i guess classified as service, thats probably not bannable since forum gold isnt involved
in any case, look around the trade forums while ur waiting for an actual player to reply