More than 8 hours for my full time job.
Same here. Plus some 2-4 hours during the time after work, for private projects, programming or just watching some videos.
I'm doing home office full time, and I didn't need to physically go to work since two years.
I know it sounds cool, and in some ways, it actually is (if you bring up the discipline to actually do your work). But sometimes, it can be really annoying. As anything in life.
But in general, I'd say it's a jackpot.