On Friday, Amazon.com Inc. will offer a one-year Prime membership at a one-third discount. Should you go for it? To celebrate its Emmy-winning show âTransparent,â Amazon AMZN, -0.18% will offer a one-year Prime membership â regularly priced at $99 â for $67 on Friday. This one-day deal is available to new members, who can sign up by going to Amazon.com/TransparentPrime.