App Store notifications regarding price drops?
You can do it via the web site AppShopper. Sign up for a free account to get started.

While it can't read your Apple wish list, you can create a wish list on that site and it will notify you of price drops of your wish list items via email. It will also email you about updates for your wish list and your "My Apps" list. Personally I don't keep any apps in "My Apps" list, since Apple updates them for me every night on all of my devices.

I have no professional affiliation with this web site. I'm just a satisfied user.



Note: Checking "Notify me of price drops by E-mail" and unchecking "Share My Wishlist" on the Wish List page of AppShopper didn't seem to be "remembered" by the site (perhaps due to my browser settings), but it does work on the My Profile page.