I'm seeing a lot of people reporting huge ROI jumps after switching to this simplified script for checking actual net profit per campaign.
const margin = (revenue - cost) / revenue;const netProfit = revenue * margin - spend;return netProfit;
It's hard to tell if the numbers are actually better or if it's just a coincidence from recent seasonal shifts. I don't see any way to account for external shipping costs in this snippet, so the data might be misleading without a longer test period.