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

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

Prime Membership Costs Are Going Up In Canada For New

Is Raising the Price of Prime Memberships

2014 Ars Technica

Prime Music Streaming Service Coming (Updated)

5 Ways to Avoid Paying $139 for Prime

Under Pressure to Raise the Price of Its Prime Membership Soon

Biz & IT Ars Technica

10 years later, celebrates Prime's triumph

Prime Price Drops From $99 To $79 Just For Today

Prime Video will start showing ads on January 29th / Movies

Is Prime Worth It?

How Prime Membership helped to become Trillion Dollar

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

At The Nexus