We always rent from Hertz through Auto Europe. We get a small automatic with the full, no-deductible Super CDW insurance. Yes, it’s more expensive, BUT the cost of even a small ding would far exceed the extra amount it costs for full coverage. And it’s easy. Once, we actually scraped a stone wall pulling out of the Gap of Dunloe and, when we returned the car to the Dublin airport, they saw we had full coverage and we were able to just walk away. The other thing is, when you get full coverage, the hold that Hertz puts on your credit card equals the average cost of a tank of gas. If the company Auto Europe is using (Payless) is going to put on an $1800 hold on your credit card, it’s because you’re not buying full coverage. Now, having dealt with Auto Europe for over 25 years, I will say that not all of their providers offer full Super CDW insurance, and that might be the case with Payless. I'd call them back for a price comparison.
The roads in Ireland are narrow; many of them are lined with stone walls or hedges that can easily ding and scratch up a car. I can’t stress enough the importance of full coverage. Without it, one tiny mishap can end up costing thousands.
One other thing about Auto Europe. For many of their rentals you can include what's known as a "refundable zero deductible". Here's how it works. First, it brings the cost of the rental down considerably, and the provider will still put a hefty hold on your credit card. IF you bring the car back undamaged, the hold is taken off and you're on your way. IF, however, the car gets damaged, they will charge your card whatever the estimated cost of repairs comes to (up to the amount of the hold), and then Auto Europe will refund that amount to you. Now, all this doesn't happen overnight; there's a process you have to go through, and it can take a while. It might be something to look into. For me personally, I just don't want the potential hassle...another reason I go with full coverage.
Hope this helps.
-Russ