I have a 500W 4x10 in my house! You can always just stick with one gigging amp and simply turn it down at him e. I would only look at a separate practice amp if you didn’t have room for it and were going to keep your large amp in storage, or if your main amp had a really noisy fan that could not be tamed, or, you just fancy another amp of course! Just don’t be scared off thinking you can’t use a big rig at home.
Do you have another amp already? Do you gig or rehearse that might need a powerful amp?
If just wanting something for home use, or low volume practice, I would look at a Markbass 801 or PJB Cub / Double Four at exotic end, or a Roland Cube, Fender Rumble or Line6 Studio 110 at the more affordable end. But there are tons of options in that price range!