I have to agree with other8026 here. I've got some paid apps that work perfectly fine when I log into Aurora with my google account associated with the app purchase, and then install them (e.g. Moon Reader Pro). Once that is done I can log out of that personal account and the app works perfectly fine.
Others won't, and need me to have play services / store installed and me permanently logged into my personal account to work. I no longer use those apps.