According to EU refund law, if a person releases an app on the Google Play Store, does the person need to even give the payment he received back? Can one specify no refunds by putting it after the app name like "The App (nonrefundable irrefundable)"? How will a person determine whether a user's app download has begun? Does the download start as soon as purchase is completed? I've never bought an app, so I'm not sure.
Can EU users buy everything, ask for refunds, then repeat again and again?
Is blocking EU users sufficient? Do such laws apply in other countries?
Assume the app works as described.