You can saveoncar rentalcoverage

• Pay a flat rate per vehicle rental for up to 42 consecutive days of coverage
  (not a per day rate that rental car companies may charge)
  
• You can choose from two coverage options to fit your budget
  
• You only pay when renting with any of your enrolled Card Account(s)
  

NOTE: Coverage amounts will vary based on:

1) State of residence

2) Level of Coverage chosen.

3) Premium is added to EACH rental agreement on your Amex Bill. Excellent deal for rentals longer than 3 or 4 days, up to 42 days max, but may not be a great deal for a 1-2 day rental.

Keep in mind, most car rental agencies $10-18 per day for Collison Damage Waiver. So paying $12-25 for a full rental period of 7 or 14 days is an excellent value and fantastic on a monthly rental (30 days).

https://www295.americanexpress.com/premium/car-rental-insurance-coverage/home.do?intlink=US:Amex:NewSiteSearch:RecomLink2

KEY FEATURES
Flat rate of $19.95 / $24.95 per rental period, not per day depending on your coverage selection ($15.95 / $17.95 for CA Residents; $12.25 / $15.25 for FL Residents).
Coverage is primary for theft and damage to a Rental Vehicle. If your rental vehicle is damaged, you can file that claim with us first as your primary provider.
Coverage provided is not subject to a policy deductible.
You pay only when you rent. Your enrolled Card Account(s) will automatically be charged when used to pay for a rental vehicle until your enrollment is terminated.