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If your mattress is already on its way out, the real question isn't 'which mattress' — it's 'do I wait for Prime Big Deal Days or buy now.' Here's a straight answer, plus what to look at when the sale hits.
Confirmed 2026 dates: Prime Big Deal Days runs 6–7 October 2026 — a 48-hour event, Prime members only. Black Friday falls on 27 November and Cyber Monday on 30 November 2026.
So the wait is about three weeks from now, not three months — which changes the maths if you're sleeping badly in the meantime.
Silver Pick — Budget
Foam mattresses see the most consistent event-day discounting — a safe category to wait for.
Check Today's Price on Amazon UK →(paid link)
GOLD PICK — 100% CONFIDENCE
Hybrid Mattress
We Recommend: 5/5 — hybrids (springs + foam) tend to carry the biggest cash discounts since they sit at a higher normal price point.
Check Today's Price on Amazon UK →(paid link)
Premium Pick
Cooling hybrid or memory foam mattresses — worth waiting for if you're not desperate for a same-week delivery.
Check Today's Price on Amazon UK →(paid link)
Our Honest Verdict
If you can hold out a few weeks, mattress prices during Prime Big Deal Days genuinely do drop more than most categories. If your current mattress is actively causing back pain, don't wait — a few weeks of bad sleep costs more than the saving.
Work out which type you need before the sale starts, so you're comparing prices rather than reading specs under time pressure: best hybrid mattresses, best for side sleepers, best firm mattresses, and best for couples who need different firmness.
Also worth a look: our guide to Prime Big Deal Days sofa deals and vacuum deals to watch this October.
Sorting the bedroom? Sort the living room too.
Browse Our Preloved Sofas →Last updated: 20 September 2026.
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