Buy Cheap Box — Spring

Standard box springs are 9 inches, while "low-profile" ones are 5 inches. Measure your current bed height to ensure your mattress doesn't end up too high.

Based on current expert testing and user feedback, these are the standout low-cost options: buy cheap box spring

Zinus WonderBox / Smart Box Spring (~$70–$110). It features a steel frame that snaps together without tools. Reviewers praise its silence and durability, though some note it can run slightly narrow for certain mattresses. Standard box springs are 9 inches, while "low-profile"