How to spot a good Prime Day cheap mattress deal

A young couple unbox and move a new memory foam mattress they bought from Amazon during the prime day deals event
(Image credit: Getty Images)

With so many Amazon Prime Day discounts on budget mattresses and bed toppers, it can be difficult to know which deals are truly good value for money. On top of that, you need to be sure you're buying a mattress that has enough comfort and support for your body type and sleeping position. 

With more of the brands behind this year's best mattresses for all sleepers and budgets now appearing on Amazon, shopping the Prime Day deals for an affordable mattress is more enticing than ever, not to mention convenient thanks to free and fast shipping. But not all deals are good, and not all Amazon mattresses are worth it. 

To help you spot a good Amazon Prime Day mattress deal, we've put together this mini guide on the four key things to look for. We've also included our top tips on how to buy a good quality cheap mattress, plus the three sales we recommend shopping this weekend for better sleep on a budget if you can't wait for Prime Day. 

What to look for in a budget mattress

If you find yourself dazzled by a super-cheap price on a budget mattress, take a second to think before hitting that 'buy' button. Why? Because while you may save a lot of money right now, that super-cheap mattress will cost you more in the long term if it doesn't suit your body weight and sleep needs. You'll end up having to replace it fast, wasting your time and money. 

It's no secret that most cheap mattresses have a much shorter lifespan than mid-range ones too, so paying attention to the mattress warranty, how long it lasts for and what it does and doesn't cover will give you a good indication of how long you can expect the mattress to last.

Two men carry a mattress down a flight of stairs

(Image credit: Getty Images)

So if you're shopping the Prime Day sales for the best cheap mattress for comfier sleep on a budget, we'd advise keep the following in mind:

  • Height – Children and teens sleep comfortably on 8" mattresses, while most healthy adults sleep well on 10-12" mattresses. Heavier bodies weighing 230lbs or more should look at 12-14" mattresses as these will have extra support and comfort layers.
  • MaterialsMemory foam mattresses are affordable, and excellent at isolating motion and contouring the body, but some retain heat. The best hybrid mattresses (foam and coils) are more breathable, offer good pressure relief and generally have strong edge support, but they can be bouncier and more expensive.
  • Sleep position – Side sleepers tend to fare well with softer, contouring mattresses made from memory foam. Stomach and back sleepers would suit all-foam or hybrid beds, as long as they have enough support to keep the spine aligned to prevent the hips from dipping.

How to spot a good Prime Day cheap mattress deal

1. Use price tracking history

When scouring Amazon's Prime Day mattress deals, there are tools you can use to help you check whether the sale price is genuinely good or not. For example, price history trackers like CamelCamelCamel and Keepa enable you to see how much a mattress has sold for on Amazon in the past compared to this year's Prime Day price. 

2. Ensure the mattress returns policy is clear

Most mattresses found in the Prime Day sales are sold by Amazon, but many mattresses on the site can also be sold by third party sellers. You'll know if a mattress is sold by a third party seller if it doesn't say 'Amazon' after 'Sold by'. You can find this information under the 'Buy now' button. 

Most products sold by Amazon have a 30-day returns policy, but a third party seller's return policy can differ. If you click on the seller's username and visit their profile, you'll find their returns information. If their policy seems sketchy or confusing, you may want to consider whether the mattress is worth buying.

3. Check to see if better deals exist elsewhere

Before assuming that the Prime Day deal price really is the best, check the price of the specific model you're considering buying against the price it's selling for on the mattress manufacturer's website and other third party mattress retailers such as Mattress Firm.

A woman with long dark hair buys a mattress online via her laptop during memorial day sales while lying on her current bed which needs replacing

(Image credit: Getty Images)

While Prime members enjoy free shipping, most mattresses sold direct from a mattress manufacturer's own website come with free shipping in addition to other perks such as free bedding. Not all brands offer this though. Plus, you may get a better returns policy in the form of mattress trials

We track monthly mattress sales and deals and have a number of dedicated guides to different brands to help you compare their normal sale prices with Prime Day deals. These include the best Nectar mattress sales for all budgets, as well as our guide to Purple mattress deals on memory foam and hybrid beds, and the best DreamCloud mattress sales with up to 50% off.

4. Look for verified user reviews

Sometimes a mattress deal can seem too good to be true, especially if it has a lot of overly positive review. Some mattresses on Amazon have a lot of reviews that are fake endorsements, which helps the product to get a higher ranking. 

Wondering how to spot fake reviews? Well, there are some tell-tale signs. If a review is overenthusiastic or positive without giving a reason why they liked the mattress, hen it's probably fake. Also look out for too many typos, generic statements, repeated use of the product's full name, and overuse of all caps. 

The 3 best budget mattress deals to shop right now

1. Linenspa Spa 10" Memory Foam Hybrid Mattress:was from $179now $137.08 at Amazon

1. Linenspa Spa 10" Memory Foam Hybrid Mattress: was from $179 now $137.08 at Amazon
Our testers for our Linenspa Memory Foam Hybrid Mattress review reccomend this bed for growing kids and lightweight stomach sleepers. This is one of the best Amazon Prime Day mattress deals as it is a genuine bargain, with a price that beats buying directly from Linenspa. A queen is now 29% off and down to $197.94 (was $279.99), which is cheaper than Linenspa's $319.99 price. 

2. Cocoon by Sealy Chill: was from $619now $399 at Cocoon by Sealy

2. Cocoon by Sealy Chill: was from $619 now $399 at Cocoon by Sealy
If you plan on moving away from Amazon when hunting for a budget mattress, we reccomend checking out the evergreen Cocoon by Sealy mattress sale, permanently reducing this cooling foam bed to just $699 for a queen (was $1,079). This is excellent value for a cooling bed, and one of the best memory foam mattresses for keeping cool. 

3. Siena Memory Foam mattress:was from $499 now from$199 at Siena Sleep 

3. Siena Memory Foam mattress: was from $499 now from $199 at Siena Sleep 
Our Siena Memory Foam mattress review testers loved the sturdy support and temperature control and recommend it as the best mattress for stomach sleepers on a budget. You don't have to be too strategic about when you buy this budget all-foam bed thanks to the regular Siena mattress sale that knocks up to 60% off. This brings a queen down to $399, with a 180-night trial and free shipping and returns.

Frances Daniels
Senior Sleep Staff Writer

Frances Daniels is a PPA-accredited journalist and Sleep Staff Writer at Tom's Guide with an MA in Magazine Journalism from Cardiff University. Her role includes covering mattress and sleep news and writing sleep product reviews and buyer's guides, including our Best Hybrid Mattress 2025 guide. She is hugely interested in the relationship between good sleep and overall health, interviewing a wide array of mattress and sleep experts to create well-informed articles about important topics such as nutrition, sleep disorders (from sleep apnea to night terrors), lucid dreaming, sleep hygiene, and mattress care. She is also our specialist on mattress toppers — producing mattress topper reviews and taking care of our Best Mattress Toppers 2025 guide — and takes the lead on all content related to fiberglass-free mattresses for a clean, non-toxic sleep. Outside of Tom's Guide, she has written for Ideal Home, Homes & Gardens, and Marie Claire. 

With contributions from
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