Ug sorry. I figured it out, you have to have money on deposit in order to purchase things for 1 satoshi.
What in the heck could you possibly have been considering purchasing for a single satoshi may I ask? 1 satoshi at today's rate isn't even 1/10,000th of a single US penny! Anyhoo, wouldn't make much sense paying transaction fee's in this case.
Soon that will be worth 10,000x a dollar woooooop