Not allowed.
We allow users to trade pokemoney from blue for pokemoney for yellow (for example) or other ingame stuff. We don't allow coin deals as there it could be too much of RMT issues + scam issue
*Coughs* Christmas event*coughs
Anyways there will be events, but Hoenn is still new and it hasn't got many interesting quests like Johto/Kanto do so our current priority is more on the permanent stuff.