The lucky shoppers found that a discount code meant they could get £5 off their purchases.
But discount code glitches aren't the only way to save cash when shopping on Amazon.
We've found seven loopholes or little-known ways to get a discount.
For some of these tips you'll need to be an Prime member.
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It costs £79.99 for a year's subscription, or £7.99 a month and will see you get free next day delivery, access to Prime Video and early access to lightning deals across all ranges.
Amazon offers a free one-month trial, so you can sign up and cancel before the end of the deal and you won't pay a penny.
Just remember to cancel, otherwise you could be charged the full £79.99.
1. Get free product samples
Amazon will randomly send Prime members free product samples in the post that the retailer thinks they may like.