I got my favorite mattress ever from Amazon and it cost like $350 for a (firm) queen foam mattress, box spring, and frame.

Casper (or someone writing about them) once wrote a blog post about how they got into the mattress business because they saw unnecessarily huge margins and direct to consumer opportunity. Now they are opening physical stores and not even charging much differently from regular mattresses. I’m just going to keep buying cheap Chinese mattresses that don’t spend hundreds of dollars per purchase on advertising

A memory foam mattress for $400? That's a very good deal.

The only Casper product I have is a dog bed and it's great.

Not foam, it's some hybrid spring thing. There's so much crap out there it's hard to know what's real and what's BS

I got Costco's house brand memory foam mattress for that when it was on sale. Best mattress I've ever owned. (And I probably wouldn't have it if I hadn't tested out a memory foam mattress at a Casper store, in a bit of irony.)