Case in Point Lyrics

Lyric discussion by Why?Eff. 

Cover art for Case in Point lyrics by Andrew Bird

Just a simple, and likely obvious thing to add to everyone's interpretations is that "a real hard sell" could also double as "cell" as in a jail cell in which he's confined in. His conceptual hell are the bars of his mind that he seems trapped behind because his reality doesn't seem to transcend into the real world. Therefor, it's impractical.