While prices vary by brand and material (wood vs. steel), here are the average costs you can expect to pay: How Much Does a Box Spring or Foundation Cost? | GhostBed®

: Ideal for those looking for easy-to-assemble metal frames that ship in a single box. The Wayfair Sleep Easy Assembly Metal Box Spring Go to product viewer dialog for this item. is a frequent best-seller priced around $115 for a King.

: Known for some of the most affordable options, Walmart offers popular "smart" metal box springs like the Mainstays 9" High Profile Go to product viewer dialog for this item. for around $127 $94.

: A great local option for those who want a "real working" modular box spring that acts as a shock absorber for innerspring mattresses. Quick Price Comparison by Size

: If you prefer professional delivery and setup, this specialist retailer offers basics starting at $169.99, along with higher-end universal foundations.

Finding the right support for your mattress doesn't have to be a headache. Whether you are looking for a quick online delivery or a local shop where you can see the product in person, there are plenty of reliable retailers offering everything from traditional wood to modern steel foundations. Top Retailers to Buy a Box Spring

: Retailers like The Home Depot and Lowe's carry reliable bed base supports from brands like Zinus and Serta, often available for both home delivery or in-store pickup.