I purchased 2" memory foam (medium density, I think) from a foam place I have worked with before. I have slept on them only 2 nights, in the 2 months I have had them in the truck. I sleep on a very hard mattress at home and it’s a bit too much luxury for me :). I have a regular-sized camper, not the XL.
I don’t want to ship it so you need to pickup, in Santa Monica.
I paid about ~200-250 for the foam and would part with it for any fair price, including down to zero if you want that. It is really fantastic stuff, and in perfect condition, it’s just not for me.
DM me and I can give you my cell phone to coordinate.