I already asked one of trading moderators about this, he said he cannot do anything now about this, but if there will be enough people interested in they will make subforum 'later'
Will see what things will go
Also vote in this thread:
https://forums.d2jsp.org/topic.php?t=80869182&f=258&o=0#p544266860 maybe will be helpful
PS. got a lot of currency for sale, don't want to spam here so if anyone interested, PM me