I’m sure you’ve said that at least once. Sometimes, I feel like I say it once a week!
However, I recently stumbled upon Jaxworks.com’s free spreadsheet library. Holy motherload, Batman!
http://www.jaxworks.com/library.htm
Other good free spreadsheet links:

Etsy’s inventory worksheet
Chickenpants Etsy Goal Spreadsheet
Google Docs Spreadsheet Templates
Microsoft Office Spreadsheet Templates