…the Amazon Prime membership program is perhaps the biggest reason why [Amazon is worth more than $900 billion today].
The service, which launched in February of 2005, was a first of its kind: For an upfront payment of $79, customers were rewarded with all-you-can-eat two-day delivery on their orders. At the time, Amazon charged customers $9.48 for two-day delivery, meaning if you placed just nine of these orders in a year, Prime would pay for itself.
