How to Get a Cheap Mattress

Never pay list price

Mattresses carry unusually high margins and the industry is built around discounting, which means the list price is a reference point rather than a price anyone is expected to pay. A mattress at 40% off is frequently the mattress's actual intended price.

The practical consequence: timing is the single biggest lever on what you pay. The same mattress can swing by 30-40% across a year, and the difference is larger than the difference between two mattresses at the same nominal price.

The major discount periods in the US market are Presidents' Day in February, Memorial Day in May, Labor Day in September and Black Friday in November. Those four are when boxed-mattress brands discount hardest and when models that sit above $500 at list fall into range.

If you can wait a few weeks for one of those, do. If you cannot, the rest of this guide still applies.

What to insist on regardless of price

A published foam density. Memory foam below about 3 lb/ft3 and polyfoam support cores below about 1.8 lb/ft3 are where body impressions appear within a year. Good budget manufacturers publish these; bad ones do not, and the absence is itself informative.

A trial period with free returns. Firmness preference depends on your weight, sleeping position and spine, and no specification predicts it. Read the terms: is there a return fee, who collects it, and is there a minimum break-in period before you can return?

A warranty that covers sagging at a realistic depth. Many warranties only cover impressions over 1.5 inches, which is a mattress that is already unusable. Shorter depth thresholds are a better warranty.

A real coil unit if it is a hybrid. Pocketed coils carry load better than foam at this price and resist impressions. Continuous or Bonnell springs transmit motion across the bed.

The cheaper routes worth considering

Floor models and returns. Many retailers sell returned mattresses that have been inspected and sanitized under a certified-clean program, typically at 30-50% off. The mattress has been slept on, which is either a dealbreaker or a bargain depending on your view, and the hygiene programs are regulated in most states.

Last season's model. Mattress brands refresh model names frequently with minor changes. The outgoing model is often substantially discounted and is materially the same product.

Buying a smaller size. A full rather than a queen saves meaningfully and is adequate for one person. Worth considering in a small room where the bigger mattress was always a squeeze.

Firmness exchanges. Some brands let you swap firmness once within the trial rather than returning. That is more convenient than a return and keeps you with the brand, which is why they offer it.

A mattress topper on an existing mattress. If the problem is comfort rather than support - the mattress is firm and intact but unpleasant - a $60-$120 topper solves it for a fraction of a new mattress. If the mattress has a visible dip, a topper will not fix it and will sag into the same hole.

What not to compromise on

Do not buy a mattress you cannot return unless you have slept on that exact model. This is the one rule we would not bend. Firmness is not predictable and a $400 mistake you cannot undo is worse than a $550 purchase you can.

Do not buy a used mattress from a private seller. Beyond hygiene, you have no idea of its age or how it has been supported, and bed bugs are a genuine and expensive risk. Certified-clean retail returns are a different proposition because they are inspected and regulated.

Do not buy on thickness. A 14-inch mattress of low-density foam is worse than a 10-inch one made properly. Thickness is a marketing number.

Do not ignore the foundation. A new mattress on slats spaced too far apart will sag regardless of its quality, and many warranties are void without adequate support. Most foam mattresses need slats no more than 3 inches apart, or a solid platform.

Matching firmness to how you sleep

Getting this right matters more than the discount, because the wrong firmness is unusable at any price.

Side sleepers generally want softer, so the shoulder and hip can sink enough to keep the spine straight.

Back sleepers generally want medium-firm - support under the hips with enough give for the lumbar curve.

Stomach sleepers generally want firm, because a soft mattress lets the hips drop and arches the lower back.

Weight shifts all of it. A mattress described as medium-firm feels soft to someone over about 230 lb and firm to someone under about 130 lb. Read reviews from people of a similar weight to you rather than the average.

Mattresses under $500 covers the specific models and which firmness each offers.