Quick Answer: Costco sells adjustable bed bases both online and in-warehouse, primarily under its Sleep Science house brand — the Q-Series runs $599.99 for a queen — alongside Sven & Son and Tempur-Pedic Ergo models. The detail most shoppers miss: Costco’s 90-day return window is an electronics-specific rule covering TVs, computers, and similar gadgets, and an adjustable base isn’t on that list. It’s instead covered by Costco’s open-ended satisfaction guarantee with no fixed deadline, the same policy that applies to mattresses — as long as it’s sold directly by Costco and not through the third-party Costco Next marketplace.
Costco isn’t usually the first place people think to shop for an adjustable base, but it stocks a real, priced lineup rather than a single token model — and its return terms end up more forgiving than most dedicated mattress retailers, once you know which policy actually applies.
What Costco actually sells
| Brand / model | Queen price | Notable feature |
|---|---|---|
| Sleep Science Q-Series | $599.99 | Zero-clearance design fits inside an existing bed frame; legs adjust to 3", 6", 9", or 12" |
| Sven & Son Classic | ~$1,000 | 75° head incline, 750lb weight capacity — see our full Sven & Son comparison |
| Tempur-Pedic TEMPUR-Ergo | ~$1,599–$2,099 | 25-year frame warranty, matched to Tempur-Pedic mattresses |
The Sleep Science Q-Series is Costco’s own house line and the model most consistently in stock, both online and in warehouses that carry mattress sets. Its backlit wireless remote holds three programmable memory positions plus a one-touch zero-gravity preset, and the nearly unlimited head/foot lift range is comparable to what dedicated bed-base brands charge $200–$400 more for. Setup and old-mattress haul-away is available at checkout for an additional $85 if you’d rather not maneuver it yourself.
The zero-clearance build is the feature worth calling out specifically: most adjustable bases, including the Sven & Son and Tempur-Ergo models Costco also carries, are designed to replace a bed frame outright. The Q-Series is built to drop inside an existing platform frame or a headboard/footboard setup instead, which matters if you already own furniture you’d rather not get rid of.
Sleep Science Q-Series Adjustable Base
- Zero-clearance design fits inside most existing platform bed frames instead of replacing them.
- Backlit remote with 3 memory presets and a one-touch zero-gravity button.
Prefer to skip the warehouse trip? Try Amazon Prime free for 30 days and get eligible adjustable bases and bedding delivered fast, without a membership card or a freight-truck delivery window.
The return policy detail most shoppers get wrong
Costco built its reputation on a return policy with no time limit at all, but that changed for one category in 2007: electronics. According to Costco’s own member terms, a fixed 90-day return window now applies to televisions, projectors, major appliances, computers, touchscreen tablets, smart wearables, cameras, drones, camcorders, MP3 players, and cell phones — a list Costco added after members were buying TVs for the Super Bowl and cameras for a single vacation, then returning them once the trip was over.
An adjustable base has a motor, a wireless remote, and often USB ports, which makes it easy to assume it falls under that same 90-day electronics rule. It doesn’t. Costco’s own return terms don’t list bed bases among the 90-day exceptions, which means they default to the general open-ended satisfaction guarantee — the same no-deadline policy that covers mattresses, where returns processed months after purchase aren’t unusual. The one carve-out: any adjustable base listed through Costco Next, a marketplace program where Costco hosts a third-party vendor’s catalog rather than selling the item itself, follows that vendor’s own return policy instead of Costco’s guarantee — worth checking on the product page before buying if the return terms matter to you.
Who buying at Costco actually makes sense for
Costco’s lineup is short compared to a dedicated mattress retailer or Amazon’s full catalog, and its Sleep Science house brand doesn’t carry the model-by-model warranty documentation that Sven & Son or Tempur-Pedic publish directly. Where Costco wins is the combination of a known return policy with no countdown clock and a queen-size base under $600 — cheaper than most of the brands in our main roundup — plus the option to add professional setup and haul-away at checkout, which most online-only retailers don’t offer at all.
The bottom line
Costco does sell adjustable bases — a $599.99 house-brand Sleep Science Q-Series, plus Sven & Son and Tempur-Pedic Ergo — and the return policy is more forgiving than the 90-day window shoppers often assume applies to anything with a motor and a remote. If Costco’s in-stock lineup or a warehouse trip doesn’t fit, our best adjustable beds roundup and seniors-focused picks cover the same price range and more brand options, deliverable without a membership card. No membership at all, and want something even cheaper than the Q-Series? See our does Walmart sell adjustable beds guide — Walmart’s own Mainstays base runs about $360 less, though the 90-day return window there only applies to items Walmart sells directly, not its marketplace listings. Shopping a furniture showroom instead? Our does Ashley Furniture sell adjustable beds guide covers a stricter case still — Ashley’s adjustable bases are final sale with no return window at all, even less forgiving than Costco’s open-ended guarantee.