Pfft, an episode? there's a whole season of FFXIV hoarders dedicated to me!
also, it's not just $3 for an additional mule, at minimum you'll require to have a separate account, which means it's another $9.99 per month if you want to have a mule.
Why another account you say? well, unless you have figured out a way to transfer items between different characters on the same account.... :P
and no, having a friend or ls member serving as a intermediary doesn't count, not only is it a huge inconvenience to both you and your friend by doubling the amount of trading needed to be done (who may reconsider being your friend after your 48th request for transferring stacks and stacks and stacks and stacks of items..), it is also unreliable at best, as you may not always find people to serve as a virtual deposit box when you need one.