My Dupbuy Spreadsheet Adventure: Snagging Gucci Flashtrek Shoes & More! My Dupbuy Spreadsheet Adventure: Snagging Gucci Flashtrek Shoes & More! As a regular European shopper, I recently discovered the wonders of using Dupbuy as a… My Dupbuy Spreadsheet Adventure: Snagging Gucci Flashtrek Shoes & More!