No, sorry, pretty sure there is not. Amazon.com stats are updated around 13:00 CET (or whatever that is for you) and there is no email notification that you can receive or API you can access to get the information. If you have any programming knowledge then I guess the only way would be to write a script which automatically logged in to your account and pulled out the data somehow. Not worth it, unless you have a very good reason! And it would still only be once in 24 hours...
Grab Roboform or use iMacros and create simple one click logons. Then just check things a few times a week.