Arrived at the airport to pick up the car I paid for weeks in advance. Used the same card that I'd used weeks before to pay the deposit, the card was rejected because it was a debit card (it wasn't). Instead they told me they had one last car that I could rent for a 'small mark-up' because the time was short. Much to my surprise the small mark-up was from 200E to over 3,000 euros (yes, 15x). They told me none of the other companies would be able to rent me a car at that busy time. I went to the first company I could find (literally 2 window shops away) and got a car for a bit over 200E. They refunded me with less than 100e for the 'trouble', so you could say it was a good day's work for rentalcars.com! I'm not one for giving advice to what people should do, I'm just going to say I would never consider them as a car rental option in the future.