I’ve been hunting for a vintage Chanel jacket for months, refreshing eBay and Vestiaire Collective like a maniac. Then my friend, a seasoned sneaker reseller, dropped a bombshell: ‘Why not try a mulebuy spreadsheet? I got my grails from a Taobao agent for half the price.’ At first, I was skeptical—spreadsheets for shopping? But curiosity won, and I dived in. Here’s what happened. Let’s talk money. A pre-loved Chanel on StockX? $3,500 easy. On taobao agents via Pandabuy’s competitor? I found the same piece for $180—before shipping. The catch? You need to navigate a mulebuy spreadsheet listing all the hidden gems. I spent one evening cross-referencing colors and sizes, and…