None = Avoid at all cost. Worth cutting your ears off to avoid if someone threatens to play it for you. When faced with even the threat of its cellophane-wrapped presence, your best option is to RUN AWAY! RUN AWAY!
$= If you stumble across it for cheap in a used bin, it might, maybe, perhaps could be worth the buy, but only if you need a cheap coaster for your cold drinks or a cool-looking frisbee.
$$= You might want to give this CD/artist a try, but only if the sample track tickles your fancy. Don't bother buying this one new because the good tunes you'd get out of this one ain't worth that kind of money.
$$$ = Worth looking for on a casual basis and maybe even buying new, but no big rush.
$$$$ = Definitely worth having in the ol' CD collection and definitely worth buying new, but don't re-arrange your personal "must have" list to get your hands on it.
$$$$$ = Why haven't you bought this CD yet? Go. This is a "Want. Take. Have." situation because you so want this.
Best of the Pixies: Wave of Mutilation Rating=$$$$$
If I Should Fall From Grace With God Rating=$$$$$