Rental Car Caution
But my cousin used them this week for a trip to Florida and Budget refused to rent the car to her because she had a US license -- not a British. The problem was with Budget -- not ebookers. They called ebookers on my cousin's phone because they were not allowed to make international calls from their phone. Ebookers was very nice about it and refunded the money. Budget had a monopoly at the airport and she ended up paying double what she had expected.
I don't know if this is something the other rental agencies will pick up on. So just a caution to check with the US supplier before you sign the dotted line with ebookers or any other non-US company.