Keep Amazon and marketplace stock in one place
One SKU on three channels is still one pile of goods. Put Amazon and marketplace stock on a single board before you oversell.
Amazon and marketplace stock live in different tabs until you put them in one place. Seller Central shows FBA. eBay has its own quantity. Shopify is the site. If the same SKU sits on all three, the real number is how many units you can still promise, not how many each dashboard likes to display.
What one board has to show
A useful stock view is small. You need the SKU, the channel quantity, the warehouse quantity and a date when the pile runs out at the current pace. That is enough to stop a listing before it sells air. Extra columns for last year’s notes only hide the row you need at 11pm.
- Amazon: FBA versus merchant-fulfilled on the same SKU
- eBay: quantity you actually promised on the live listing
- Shopify: on-hand for the site, not the draft product
- Your warehouse or 3PL: units that are not yet on a channel
Why a spreadsheet dies in week two
A sheet works on the day you paste three exports. The next morning Amazon moved two units, Shopify sold one overnight, and the sheet still looks fine. Nobody opens it before they change a price. The board has to refresh from the channel, not from a Friday ritual.
Shared sheets also split. One person keeps “live”, another keeps “backup”. When a partner asks “can we run a deal on this SKU”, you guess. Guessing is how you oversell a size that already left the warehouse.
How Sales keeps the pile in one place
Sales by Integrono is a multi-channel seller dashboard. You connect Amazon, eBay and Shopify with OAuth, add warehouses, and read stock next to the channel price. A run-out timer uses your daily rate or the last 30 days of sales so a slow SKU does not look safer than it is.
Telegram can ping new orders. That is not a stock report, but it tells you the board moved while you were packing. You open one cabinet instead of three seller logins and a sheet named final_v7.
A ten-minute weekly check
Once a week, open the SKUs that sit on more than one channel. If Amazon is thin and Shopify still looks fat, the site is the risk. If the run-out timer is under a week, pause the weakest listing before you buy more stock. The board is there so that decision takes minutes, not an export.