Prime subscribers can currently sign up for four months for a total cost of $0.99 (or 99p in the U.K.), with the service reverting to its usual price of $7.99 (£7.99) per month thereafter. The non-Prime price for the service is $9.99 (£9.99) per month.
Amazon Music Unlimited launched last year to compete with the likes of Apple Music, Spotify, and Google Play Music. Its music catalog of "tens of millions of songs" makes the service distinct from the company's Prime-only music library, which offers access to "over a million songs". A standard Prime subscription costs $99 (£79) annually.
The four-month discount is only valid for Prime members and is only redeemable toward an Amazon Music Unlimited Individual Monthly Plan. The offer ends on July 11.
Data from Consumer Intelligence Research Partners (CIRP) estimates that Amazon Prime membership has grown 35 percent in the past year. Figures suggest there were 85 million Prime members as of June 30, 2017, while CIRP's June 2016 estimate put the number at 63 million.
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