There is a relevant Quora thread https://www.quora.com/What-are-the-best-sites-to-buy-App-Store-reviews-Android-and-or-iOS which features two dueling camps: one side extols the virtues of select Pay-for-Reviews sites, while the other takes the opposing view of Don't do that! - A sure way to get banned and/or banished; –and Yes, the Refill feature offered by some of those mentioned makes you wonder: What's the reason this is being offered, as in a "good reason" -?