what is the percentage of depreciation on a one year old simmons beauty rest mattress?
I’m a renter and due to recent rain, my roof leaked water in my bedroom and damaged my mattress. Now my landlord wants to pay a depreciated value. I have had the mattress for one year.

minus 10% from the initial cost
thats the value
how much would you pay for a used mattress as for me not much 25% of new i would have trouble sleeping on a used mattress