Posting it here so people don't miss it. It's been up the rest of the week, but today has all the bundles that have been up the rest of the week and then some. 75% off bundles, 80% off, etc. Anything in a bundle is stand alone 50% off and if you have any of the games in the bundle already, it's listed as already purchased and still gives you the highest price deduction.
I bought Ultima bundle and Might and Magic bundles to compete what I was missing, Syndicate, and Syndicate Wars. I might also get the Sierra bundle and the Heroes of Might and Magic bundle.