Prime shipping and streaming service goes from $79 to $99 a

High shipping costs are probably to blame, increase goes into effect April 17.

The real price of Prime

2014 Ars Technica

How Much Does Prime Cost (And Is It Worth It)?

Under Pressure to Raise the Price of Its Prime Membership Soon

Prime Now Costs $99 Following Price Hike - TheStreet

Prime Price Increase - Lock In Current Price Now! - Mission

Get Prime for $79 on Friday

Biz & IT Ars Technica

s new Prime Now service promises one-hour delivery - CNET

Prime price increase: It's still inexpensive.

What is Prime? - CNET