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Buy an Affordable King Mattress Online with Delivery Australia-Wide

If there’s one piece of furniture in the entire house that you’re not willing to compromise on when it comes to luxury and comfort, it’s probably your bed. That’s why Factory Buys offers the best selection of king mattresses online so you can sprawl out in absolute comfort every night.

A proper night's sleep is just as important to health and happiness as exercise and diet, so why deprive yourself of a high-quality bed? From high-density foam to euro-top and more, we stock affordable king mattresses to accommodate everyone’s specific needs and preferences. Browse our selection and we guarantee you’ll find the ideal new mattress for the best possible sleep experience.

King mattresses and frames for all shapes and sizes.

Our king mattresses are big enough for the entire family to cuddle up on and watch a movie or to spread out on those lazy weekend mornings when you’re not quite ready to get up yet.

First time opting for a king-size bed? We also stock a great range of king-size bed frames so you can get the full setup in one convenient purchase with Factory Buys.

If you think a king mattress might be a bit overkill or perhaps take up too much floor space in the bedroom, Factory Buys has got you covered for queen mattresses and double-bed mattresses too. Similarly, if you’re looking for something smaller for the kids or to furnish your guest room, check out our range of king-single and single mattresses.

Looking for that luxurious feel? Check out our Euro Top Mattresses and Zoned Spring Mattresses.

Buy online with Afterpay, Klarna and nationwide delivery to your door

We also offer Afterpay and Klarna, which allow you to pay for your new mattress in regular instalments, rather than all at once. With no credit checks, interest or fees, you don’t have to wait to start enjoying a delightful night’s sleep. You can use Afterpay and Klarna across the entire Factory Buys range, and we also accept Visa, Mastercard, American Express, Zip Pay and PayPal.

We make it easy to get your new mattress home with fast, affordable delivery to anywhere in Australia. We work with shipping companies across the country to ensure you're always getting the best deal. Simply make your purchase and we’ll get your mattress out to you as fast and affordably as possible.

Contact us today for more information

Discover more about the range available at Factory Buys by getting in touch with our team. Email info@factorybuys.com.au and we will get back to you shortly.

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What Size is a King Mattress?

A king-size mattress in Australia is typically 183cm wide by 203cm long. This advanced size offers numerous benefits, especially for couples and families.


The expansive size provides plenty of personal space and support for couples sharing the bed. Many king-size mattresses in our range come with layered support that reduces disturbances from a partner's movements, which is particularly useful for light sleepers. This amount of space is also ideal for families with children who occasionally want to share the bed. With a king-size mattress, there’s always plenty of room for anyone to share.


Visually, a king-size bed often serves as an impressive focal point in any bedroom, adding a sense of grandiose luxury. For those who value size, comfort, and elegance in their bedding, a king-size mattress from Factory Buys is the best choice.


If you’re not sure about which mattress size is the best for you, feel free to look at our handy mattress size guide. 

How Thick Are King Mattresses?

Our king-sized mattresses come in a range of thicknesses, from thin and cooling to thick and luxurious. The thickness levels include: 


  • 10cm - 19cm

  • 20cm - 24cm

  • 25cm - 29cm

  • 30cm - 34cm

  • 35cm - and above

A thick mattress can provide enhanced comfort and support, adapting better to the contours of a person’s body. This means improved sleep quality and reduced pressure on joints, which can be especially beneficial for people with back or hip pain.

A thin mattress offers greater firmness, which can benefit back support and maintain proper spinal alignment. It's also more lightweight and easier to handle, making it ideal for smaller spaces or use in multi-purpose areas like guest rooms or convertible sofa beds. 

What Types of King Mattresses Does Factory Buys Sell?

Soft

Soft but with slight support, it conforms to your body and spine for a comfy sleep. 

Plush

The ultimate comfort, these king-sized plush mattresses are made from spring or memory foam, so you’ll sink right in as it cradles you to sleep. 

Firm

Firm but still soft enough to conform to your body type, these firm mattresses are usually made from high-quality pocket springs. 

Medium Firm

The middle ground of firmness, it offers a strong level of support for your lower back, hips, and shoulders as you sleep. 

Extra Firm

The highest level of firmness, with no conforming properties. This is for those who need their lower backs, joints, and hips supported. 

How Many People Fit On a King-Size Mattress?

A king-size mattress comfortably accommodates two adults, offering each person the equivalent space of a single mattress. This spaciousness makes it ideal for couples who want to share a mattress with plenty of extra room to spare. 


Additionally, it can conveniently fit a child or pet alongside the adults, making it a popular choice for families. The generous dimensions of a king-size mattress also cater to larger individuals or those who prefer extra room to stretch and move during their sleep. A king-size mattress ensures a comfortable and restful experience for a variety of sleeping arrangements.

How Much Does a King-Size Mattress Cost?

It is the most expensive size mattress below the super-king mattress. At Factory Buys, we have a range of prices available with many great prices available. Browse the collection to find a great sale and potentially save on your sleeping investment. 


Each king mattress is made from high-quality materials with a variety of features at a great value. We offer fast delivery to anywhere in Australia and Afterpay options to break down the cost. 

Where Can I Buy a King Mattress Online?

Right here at Factory Buys! Here at Factory Buys, we provide a comprehensive Warranty for your king-size mattress so you can sleep easy. If you need any more information or more help, get in touch with us today.