Wow, their UI... insists I lived in a city I used to live in years back. There's no way to even just change my city for one search. (I tried changing my address elsewhere, but it just doesn't pick up the change.)
You can nowadays move payments profiles between Google accounts (add the other account as an admin on the profile, then remove the original account from the payments profile), or close payments profiles.
My Google Payments settings were incorrectly set as "business" for a long time, but in late 2017 I was able to move the incorrect profile to another Google account and make my main account "individual" (Google prompted to create a new payments profile when the previous one was no longer accessible to the account). Presumably closing the payments profile would have worked as well.