Items are routed to Zulily's Kentucky distribution center only after a customer places an order.

FORBES: Technology

After a customer places an order, MedBookStore relays it to this distributor, which ships the book but doesn't get paid until after Medsite does.

FORBES: What the doctor ordered

Under a new "dual point" ordering system that is being rolled out nationwide, the customer places an order at one end of the counter and is given a receipt with a number.

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