When calculating margin per product, it’s important to include all costs—product cost, transaction fees, marketing spend, and operational expenses—so you get a true picture of profitability. Tracking margin at the product level helps you identify which items are actually making money and which need price adjustments or cost optimization. I usually analyze supporting elements too, like visuals and CTR impact; tools such as a YouTube Thumbnail Downloader can help when reviewing product or video performance visuals during analysis: <a href="https://ytthumbnails.org">YouTube Thumbnail Downloader</a>.