Serta iComfort memory foam mattress, king -- like new, cost ! - (Crozet in Charlottesville, VA

For sale: king-sized Serta iComfort Insight memory foam mattress. We bought it just over a year ago. There are no defects or damage and it is perfectly clean; it is just too soft for us. It would be fine for most people (my husband needs a pretty firm mattress!). It has a 25-year warranty. We paid over $1400 with taxes and we are asking $600, cash