King Memory Foam Mattress, 10mo old

Selling a king-size memory foam mattress, 12-in, purchased less than a year ago (in Jul 2020). It is this mattress: https://www.amazon.com/gp/product/B01NANZ3HQ/

It has always been in a mattress cover so it is very clean. I can also throw in the mattress cover if you'd like, as well as a king-size duvet insert. (I also have a bed frame, but it's not great/a little wobbly. If you want it, though, you can have it!)

I am only selling because it's too big to fit in my new apartment! Original price was over $400, I'm looking for $250 OBO. It can be picked up anytime.