Just upgraded to Mountain Lion and I have to buy iPhoto again? I originally was on Leopard.  Then I got the free upgrade to Snow Leopard.

I bought Lion when it was released and removed it after a few months because it made my machine too slow.  I upgraded the RAM and upgraded to Mountain Lion yesterday.

But iPhoto is missing?  During the last two years I bought (from Apple) an iLife disc.  Remember discs?  lol

Anyway, it's iLife 11 so technically I could install it from disc but I like the app store experience.  Do I really have to pay $15 again for iPhoto in order to get it from the app store?  Or is there another way?
You can always re-run the disc based installer and avoid re-purchaing the app from the App Store. Eventually you will buy a new Mac which will then allow you to claim the App Store licenses for iLife without paying additional fees.

I'm stuck in the same boat with Aperture. The convenience of the App Store isn't enough to make me want to re-pay for the software I have a DVD based install.