You sell a ton of them, across multiple platforms, your fulfillment process looks great, until you get that email. The product is out of stock.
Then you start getting more of them, you have to start refunding customers, you get the angry customers, negative ratings.
It made me shut up shop for quite a bit before I re-entered in to a safer niche. But have you had to deal with it, and how did you do it?
I might have an opportunity, but I don't want to get stung with bad reviews again.