Amazon is turning 20 on July 15, and to commemorate the occasion, the retailer will offer “more deals than Black Friday.” Dubbed Prime Day, the retailer is promising a “global shopping event” that will be open to Prime subscribers in the US, the UK, Spain, Japan, Italy, Germany, France, Canada, and Austria. To further incentivize the purchase of Prime subscriptions, Amazon is slashing the price of annual membership to £59 (from £79) in the UK. New customers can sign up for Prime at a discounted price in the UK until midnight July 8.