Amazon offers a 30-day free trial of Prime to new customers, which automatically renews at £8.99 per month once the trial ends. Students and 18 to 22-year-olds can get an even longer six-month trial. This is the best way to test-drive all of the benefits of Prime before committing to a paid subscription.

Shoppers with a Prime membership can also set up app notifications to ensure they don't miss out on deals on products they have recently searched for. Members can also set up a Wish List containing their must-have items, and if they go on sale, they will be the first to know.

Amazon's Prime Day has started and runs till July 11. It's one of the summer's biggest sales with hundreds of discounts. If you're planning to shop, Amazon is offering a $200 gift card when you're approved for the Prime Visa.