Prime Big Deal Days starts at 12:01am tomorrow, Tuesday 6 October, and runs until 11:59pm on Wednesday 7 October. Between now and then, your inbox will fill up with badges screaming "40% off" and "deal of the day".
Here's the awkward part: a big percentage doesn't tell you whether the price is any good. It only tells you how far the price has fallen from a number the seller chose.
This guide is a quick way to check, using real examples from Which?'s early price tracking, so you spend money on the genuine bargains and skip the rest.
When does Prime Big Deal Days 2026 run?
Amazon has confirmed the UK event runs from 12:01am on Tuesday 6 October to 11:59pm on Wednesday 7 October 2026. It's open to Prime members only, which includes anyone on a free trial.
Prime costs £8.99 a month or £95 a year. Students and 18–24s pay £4.49 a month or £47.49 a year, and new customers can start a 30-day free trial. If you're signing up just for the event, set a reminder to cancel before the trial ends, otherwise Amazon will start billing you.
Amazon says the headline categories are home, kitchen, electronics, toys, fashion and beauty. For the full rundown of dates and membership, see our Prime Big Deal Days guide.
Why a "percentage off" badge isn't enough
A discount is measured against a reference price, and sellers have a lot of freedom in choosing it. A £100 item that normally sells for £70 can be shown as "£100 → £70, 30% off" and still be priced exactly as normal.
What you actually want to know is simple: is this cheaper than it has recently been? That's the question to answer before you click buy.
Real examples: genuine bargains vs. "meh"
Which? tracks six-month average prices and historic lows for products going into the event. Its early checks show how different two "deals" can look once you compare them with history:
| Product | Early price | Typical price | Verdict |
|---|---|---|---|
| Eufy Video Doorbell Dual S330 | about £119 | about £146 | Lowest price Which? has recorded |
| Eufy Omni C20 robot vacuum | about £284 | about £339 | Cheapest ever recorded |
| INIU 22.5W power bank | about £17 | lowest recently about £13 | Not at its best price |
| Devola DV12L dehumidifier | about £129 | lowest about £106 | Not at its best price |
Source: Which?'s early Prime Day October 2026 deals coverage. Prices move quickly during the event, so treat these as illustrations of the method, not a shopping list.
Notice the pattern. Two of these are genuine record lows. Two are discounted but still pricier than they've been before. If you bought the power bank at £17, you'd have paid about 30% more than its recent low, and may well have felt good about the "saving".
A five-minute checklist before you buy
1. Look at the price history. Free price-tracking tools and browser extensions show what a product has sold for over the past few months. You're looking for two things: the six-month average and the lowest price.
2. Ask if it's a record low or just a decent price. A record low is a strong signal. A price that dips this low every few weeks means you can safely wait.
3. Check it's the same product. Retailers sometimes sell near-identical models with slightly different specs for sale events. Check the model number, not just the brand and name.
4. Compare elsewhere. Amazon isn't always cheapest, and rival retailers frequently run their own offers around big events. Search the exact model name and compare before you commit.
5. Think about whether you'd buy it anyway. If a product wasn't on your list yesterday, a discount doesn't make it a need. The cheapest purchase is the one you skip.
What's worth buying now, and what can wait?
Amazon's own devices (Echo, Fire TV, Kindle, Ring) tend to see some of the deepest cuts, because Amazon controls the pricing directly. Everyday household items you'd buy anyway, such as dishwasher tablets and cleaning supplies, can also be a sensible use of the event if you check the price per unit.
Bigger-ticket tech such as TVs and laptops is trickier. These are usually contested across many retailers around Black Friday, which falls on 27 November 2026, with Cyber Monday on 30 November. If you're not in a rush, our October sales guide covers what's worth buying now and what to leave until later, and our sales calendar lists every major sale between now and Christmas.
A useful rule of thumb: if you need it before Black Friday, or it's an Amazon-brand device, October is a reasonable time. If it's a major appliance or TV and you can wait six weeks, compare before you buy.
Ways to save a little more
- Check for extra codes. Event pricing and voucher codes don't always combine, but it costs nothing to look at Amazon UK voucher codes before you pay.
- Stack where it's allowed. Our guide to stacking codes and cashback explains which combinations tend to work.
- Set alerts. Amazon lets Prime members set deal alerts on specific products and categories, which stops you scrolling impulsively.
- Browse by category. If you're after tech, our Electronics deals page pulls together current offers from multiple retailers.
Stay safe during big sales
Big sale events attract copycat websites and fake delivery messages. Only buy through the official Amazon app or website, and be wary of links in texts or emails. Our guide to spotting a fake shopping website covers the warning signs.
You also keep your normal rights. Under the Consumer Rights Act, faulty or misdescribed goods can be returned for a refund, and Amazon's standard 30-day return window applies to most items.
Frequently asked questions
When does Prime Big Deal Days 2026 start and end?
It starts at 12:01am on Tuesday 6 October and ends at 11:59pm on Wednesday 7 October 2026.
Do I need Prime to get the deals?
Yes. The discounts are for Prime members only, including those on a free trial.
How do I know if an Amazon deal is genuine?
Check the price history over the last three to six months. If the event price is at or near the lowest it has ever been, it's likely a real saving. If it's near the usual price, it isn't.
Is it better to wait for Black Friday?
For TVs, laptops and large appliances, it can be, as more retailers compete. For Amazon's own devices and everyday items, October is often fine.
Can I return something I bought in the event?
Generally yes. Faulty or misdescribed items are covered by the Consumer Rights Act, and most Amazon items have a 30-day return window.
Sources: Which? (early Prime Day October 2026 deals coverage); About Amazon UK (event dates, Prime pricing and categories).