The only servers I'm trading stuff for right now are Lightning's Blade (US) or Boulderfist (US). May possibly accept trades of gold for my personal Rift account that I pre-ordered but it depends on the price.
PM or post here if you have gold on either of those servers.
EDIT: Forgot to add... only currently doing it if you're from the US servers only because 1) I doubt if you're playing on the European servers you would have gold on the US servers (who knows I may be wrong?) and 2) Currency rates for my credit card are extremely high when doing these types of payments but if I do get someone who is willing to offer enough to make the cost seem worth it, I might do it.