12″ King Zinus Memory Foam Green Tea Mattress @ Amazon $290.63 + Free Shipping By admin | May 18, 2017 4:47 pm EST 0 Comment Amazon has the 12" King Zinus Memory Foam Green Tea Mattress on sale for $290.63 plus free shipping. Not the lowest price according to CCC but still a nice discount.12" King: $290.63Other sizes available as well.12" Queen: $251.7512" Full: