The average cost of an innerspring mattress is $850 for a queen size. The average cost of a foam mattress is $1,000 for a queen size. The average cost of a latex mattress is right around $1,500 for a queen size. And finally, the average cost of a hybrid mattress is $ 1,650 for a queen size.

Fact

There’s enough gold inside Earth to coat the planet.

Turns out, there’s quite a bit of gold on—or, really, in—our planet: 99 percent of the precious metal can be found in the Earth’s core, Discover Magazine reports. How much is there? Enough to coat the entire surface of the Earth in 1.5 feet of gold.