Amazon to deliver your groceries
As you'd imagine, it works in a very similar fashion to the rest of Amazon's dealings. You go on a website, add a load of stuff to a basket, and then they deliver it to your house. Presumably when you're not in, with your purchases thrown on the roof.
However, it isn't as straightforward as, say, a Tesco grocery order. There's a subscription to pay.
So, in the States, you get a free 30-day trial and then, after that, AmazonFresh will cost you $300 for a year's worth of deliveries (plus the money you spend on your actual shopping) and you get Amazon Prime thrown in. Basically, it sounds like a load of rubbish.
With better alternatives already existing in the UK, it is tough to see why anyone would go for AmazonFresh, so maybe they'll tweak the way they do things over here.