Amazon has Tuft & Needle Mattresses on sale, rarely go on sale.
Full $346.50
Queen $416
King $525
Cal King $525
Tuft & Needle Queen Mattress, Bed in a Box, T&N Adaptive Foam, Sleeps Cooler with More Pressure Relief & Support Than Memory Foam, Certi-PUR & Oeko-Tex 100 Certified, 10-Year Warranty. https://www.amazon.com/dp/B00QBZ2…XCbGE