Used mattresses can be a cheap upgrade—great for moving or guests.

Buying a used mattress can save you hundreds of dollars—especially if you're moving, furnishing a guest room, or just need a quick upgrade. Many people sell barely-used, high-quality mattresses after short periods due to relocation, upgrades, or switching sizes. With a little research, you can score premium brands like Tempur-Pedic, Casper, or Sealy for a fraction of the price.