Going to Spain for a week in July. My mind is boggled by the car hire, I can't figure out the price difference between the same car for what seems like the same coverage. Anyone do it regularly and know what to look out for? I'm looking at a 7 seater, it's 150 euro for pre purchase partial refund, it's €180 for full to full, or €190 full to full, or €216 full to full with first 60km free. The conditions all seem the same. I know I'm missing something. TIA