Pre-order Download
I got an email saying my pre-ordered album is ready for download, but when I click on the link it says insignificant amount of funds, even though I have already paid for it... Why?
MacBook Air
Pre-orders are paid for when they become available and you download them (though if songs become available , not at the time of ordering, so if it's just become available then you would only now be paying for it.
http://support.apple.com/kb/HT5714 :
Some pre-orders include songs that are available for download immediately. When you pre-order, you will be charged only for these songs and you will receive them immediately.