I deal with this by calculating the average sales per day and std deviation of each product and using that to pull products that might go out of stock in the ne

I deal with this by calculating the average sales per day and std deviation of each product and using that to pull products that might go out of stock in the next day. The hard case is a slow moving product with 1 unit, you want to list it because it might be weeks before it sells, but you can’t predict when/where it will sell.