On 15 July, Amazon is introducing Prime Day: one single day in which you can get “more deals than Black Friday” – but only if you are an Amazon Prime member. Which makes this urgent: today, 8 July, you can join up to Amazon Prime for £20 off.

So that’s an annual fee of £59 instead of £79 – just for the first year, it’ll be full price again next time – and if you want that, you have until 23:59 tonight, UK time.

What Prime always gets you is free postage on most things, one-day delivery a lot of the time, plus more recently access to online films and TV. What it gets you on Prime Day is like a beefed up version of its daily deals. On 15 July 2015, you’ll get seven major deals where you’ll “save on thousands of items” plus regular “lightning deals” every ten minutes.

I like how my Mac or maybe my fingers started to write that as “lightening” deals as the aim here is lighten your bank account as much as possible. Sorry, the aim is to celebrate Amazon’s 20th anniversary, that’s what it is.

And in the States to counter how Walmart is reportedly going to offer a competitor to Amazon Prime.

If you want to sign up or check out what few details of the special offers are yet known, head on over to Amazon UK.