Thumb Score: +17

Walmart [walmart.com] has Mainstays 7.5″ Half-Fold Metal Box Spring (Twin) on sale for $35.50. Shipping is free.

Features:[LIST][*]Size: Twin (74″ L x 38″ W x 7.5″ H)[*]Material: Heavy-gauge steel frame with plastic corners and polyester fabric[*]Weight capacity: 600 lbs[*]Half-fold design for easy storage and transport[*]No-slip fabric coverlet with secure zipper closure[*]Naturally resistant to bed bugs and mold