at 2000 locations already...
"What are Amazon Lockers? Amazon Lockers are secure, self-service kiosks where customers can pick up Amazon.com packages at a time and place that is convenient for them.
...There is no additional cost to use an Amazon Locker
...You have 3 calendar days to pick up your package. If you're not able to collect your package within this timeframe, it will be returned to us for a refund."
Here's A Picture Of Amazon Locker, The New Delivery Box Amazon Is Using To Take Over The World - Business Insider