I've been away for a while, and I'm kind of checking in re: status of the whole "selling stuff you make" thing. If I recall correctly, there is no world marketplace, and you can only sell to a guild you belong to (?)
But if you don't play frequently, there's a chance you'll get booted from your guild. Has any of this changed? I like harvesting and crafting, but it seems like it was complicated to actually sell things.