Starting Feb. 28, groceryorders under $150with a two-hour delivery window will include a service fee.
Previously, orders over $35 to $50, depending on the area, qualified for free delivery.
The service fee will vary depending on how much Prime members spend.
Amazon Fresh is included with aPrime membershipof $15 a month or $139 a year.
Several of the physical locations use Amazon’scashierless checkout technology.
