Ok, so I just got back from the United Methodist Church book sale (see all the shit I bought above).
A couple of things to note: its totally fucking overcrowded, and you're gonna have to fight an overwhelming compulsion to flee from the moment you arrive. People are either pushy (and have no problemo shoving you straight into the table as they need to jam their fat ass by you into a corner where there's no room for them in the first fucking place) or clueless (and standing there in the worst possible spot they could be blocking 19,000 people as they bounce a cute lil bebe on their hip waiting for their wife to finish picking up her new stash of bodice ripper romance novels). Both are equally annoying. But if you can just resist the urge to run off to 7th Ave Donuts and persevere: its worth it if you can put in the time.