Amazon MCF and Buy with Prime

The reviews are heavily mixed, but the dominant sentiment is positive among merchants who successfully got the app working. Many praise the app for simplifying fulfillment, syncing Shopify with Amazon inventory, reducing manual work, and improving customer experience with faster shipping and Buy with Prime. Several reviewers also highlight strong, responsive support and say the app has helped improve conversions, streamline operations, and save time. At the same time, a significant number of negative reviews point to reliability and operational issues. Common complaints include incorrect inventory counts, orders getting stuck in processing, fulfillment failures, shipping profiles being altered unexpectedly, and the app not working consistently or breaking after updates. Some merchants also report poor or unhelpful support, missing features or regional limitations, confusing setup or UI issues, and shipping costs or split shipments that reduce profitability. Overall, the app seems valuable when functioning properly, but many users are frustrated by bugs, support gaps, and fulfillment accuracy problems.