This is the version of the multichannel inventory management story that vendor websites never tell you. It's drawn from one founder's actual journey from "I'll just use spreadsheets" to "I'd pay any amount of money to make this stop." If you're somewhere on that same spectrum right now, the milestones below will be familiar and the lessons learned at each stage might save you a few of the painful ones. Stage 1 - The Spreadsheet Era Every multichannel ecommerce founder starts here. You sell on your own site plus one other channel usually Etsy, sometimes eBay or Amazon Handmade. [...]