In Amazon’s new businesses,
the company acted as an agent by facilitating transactions and taking a fee.
For example,Amazon’s zShops were a virtual shopping mall,
where sellers could quickly set up an electronic storefront.
Amazon charged sellers $39.99 a month to list up to five thousand items, $0.10 for every additional item listed,
and a completion fee of 1.25 to 5 percent of the final price