It's a big shame about Tori's decline in sales and low chart positions, but then it won't really come as a shock to her I don't think, mainly due to the factors of priority, age and promotion of artists by their labels. This is something that Tori has had issues with from her labels for a very long time. Major lables pull out all of the stops with priority and promotion if the artist looks good, is young and of mass appeal. Look at the crap that dominates the charts around the world. It goes for the sex dollar rather than the talent dollar. The unchallenging market rather than the challenging market.
It's a sad truth that talent does not always equal mainstream success. Another sad truth is that big selling albums are quite often bland bilge, contrived and inoffensive, designed from conception to make money rather than any sort of statement. Look as Avril Lavigne's latest effort Girlfriend, which is the sound of her label terrified at the fact she recently got married, and god forbid the thought her album might tank as a result of her marital status. The irony here is this seems to be an aspect of Doll Posse that Tori is battling (Teenage Hustling echoes this).
Tori has achieved a great deal already and I think she has reached a level where she is always going to sell a certain level of albums. However when greedy labels are all profit profit profit, the sad thing is that even good sales these days are not enough. But she must make quite a neat revenue of her touring, because people will always go to her concerts due to her fantastic reputation as a live performer. That has to be some comfort to her.
I'm also very 'picky' when it comes to buying hard copies of albums hehe, I picked up Suzanne Vega's Solitude Standing and The Cranberries Everybody Else Is Doing It, So Why Can't We? for $2 each on CD. It's a great way to replace your worn out vinyl too hehe....Mind you there is nothing worse than buying an expensive one track album....
I hope that Tori's sales fare better in the US, her perfomance on Letterman was superb

She hasn't a hope in Australia, the charts here are disgusting too...
