[paul7986]

Here's are two below the cheapest single bed seen on Casper that runs you $500.

A Foam Queen Mattress for $189 https://goo.gl/YLChia

King or Queen $440 and below https://goo.gl/KNGwQG

[tunetine]

"Yet you could have gone to AliExpress and bought the same none branded mattress for $100."

You proved the statement to be false. Not to mention, what you have posted are coil mattresses. Companies like Casper and Tuft mark-up quite a bit if AliExpress is "warehouse" pricing, but it's really not outrageous.