Fee is in addition to postage and other fees, for merchandise insurance liability, per piece:

Insurance
(Amount for Merchandise Insurance Coverage Desired)

$0.01 to $50 = $1.65
50.01 to 100 = 2.05
100.01 to 200 = 2.45
200.01 to 300 = 4.60
300.01 to 400 = 5.50
400.01 to 500 = 6.40
500.01 to 600 = 7.30
600.01 to 5,000 = $7.30 plus $0.90 per $100 or fraction thereof over $600 in declared value
(maximum liability is $5000)