The store tends to be busy. Constantly.
The products are unique and popular among the customers. So they are buying: frequently and in good quantities.
The customers are happy about attractive prices. The vendor is happy about a good profit margin.
No need for storage facilities. Products are delivered directly to the shelf.
Selecting and ordering is super easy - and a lot of fun, too.
It does not feel as though there even are suppliers - the cooperation is seamless.