BEWARE BOOKING THROUGH RENTALCARS.COM!
I booked a car for Liberia and prepaid. It gives you a voucher with which to collect a car. On the voucher it said what was included and that a vendor may charge extra for collision if you don't have it. I revied everything and prepared my Visa collision waiver.
When we arrived the vendor did indeed try to scam us for collision. It was a very bad company Keddy by Europcar! It was so bad that I had to video him, and when I did he covered his badge and kicked us out without giving us the prepaid car.
I called rentalcars.com and not only did they leave us stranded in Liberia, but when I complained they were reprimanding me for filming the criminal activity. They wouldn't compensate me for the booking difference or indeed my prepaid fee. I had to dispute with my credit card!
Watch out! The savings is not worth it!