Chrome extension for switching languages at Google Play.
https://chrome.google.com/webstore/detail/play-store-language-switc/jcfdcbdcffghjnebhljdhopbbgmhohmo
https://chrome.google.com/webstore/detail/play-store-language-switc/jcfdcbdcffghjnebhljdhopbbgmhohmo