Joe's retail price was only $15 for the filter, which is pretty cheap. Plus since there's no way for me to make it there by 5 when he closes, he's nice enough to leave things in the drop box for me.
Anyways I figured out how to put it in, and if I'm not mistaken it looks like the reservoir that holds condensation from the fuel system is built into the same unit. Is that correct? If so, I guess I don't have to drain it now since I just replaced the whole thing.