Amazon FBA isn't too challenging. There are various bots and tools available that can help you analyze trends, and they seamlessly integrate with your Amazon seller account. By leveraging these tools and choosing the right products, you can create a steady, gradual growth with moderate returns on investment but high sales volume. This approach has been working well for me. However, for niche items like collectibles, limited edition products, and other hyped items, I prefer using eBay. While the volume might be lower, the return on investment is higher, making both platforms effective for different purposes.