the drop-off was super easy. the guy in the punta cana counter was helpfull.
the price and the final information to the customer. we booked the car for 160 USD and the final price was 530USD something unbelievable because the guy says that that price doesn't have the mandatory insurance, so he charged like 370USD more of the final price informed on the Kayak web page. that is very annoying because you want to pay what they told you for the first time, not with so many conditions and mandatory insurances that are not published on the web page.
I paid a 100$ insurance for nothing, as the insurance is useless in Dominican Republic. Do not rent through Kayak, you can loss loss money easily.