My Mulebuy Spreadsheet Saved Me $2,300 Last Month—Here’s How I Built It Okay, let’s get real for a second. I’m Max “The Spreadsheet Sensei” Chen, and by day, I’m a data analyst for a fintech startup. By night? I’m the guy who turns shopping chaos into beautiful, color-coded order. My friends call me obsessive. I call it optimized. My personality? Think hyper-logical, slightly sarcastic, and deeply suspicious of impulse buys. My catchphrase? “Let’s quantify that.” I live for pivot tables, conditional formatting, and finding the absolute price-per-wear sweet spot on every item I own. Last quarter, I felt my spending slipping. A new jacket here, a “limited drop” sneaker there.…