Quantity of customers that visit a store versus the number of actual sales transactions made, online or offline. "Visits" can be defined as footfall detected in physical stores, or online traffic to a website, or product listings.
This metric helps you assess the conversion rate: whether your product is positioned correctly, or that you are targeting the right audience. You want as many customers as possible visiting your store to walk away with a purchase.
If it takes 200 online visitors to make one transaction, compare that to other listed products in your own online store, or that of competitors if you can. If this is higher than average, it means your product positioning could be improved.