The short answer is YES. Black Box can help you find profitable products with some cautions. The tool allows you to filter results by rank and weight, both of which are important factors in determining sales volume, but other variables determine profitability. Black Box is a great tool for identifying product opportunities in your niche, but you should always do additional research before deciding on a product to launch. You need to be able to determine profit margins (after factoring in Amazon fees and shipping costs), estimate monthly sales volume, and do enough keyword research to ensure your listing will be found by relevant customers.