First of all, I was only notified that I had went over my limit of miles 500 miles later, therefore I was already in debt to them before I could 'buy' anymore miles. Also, the price to top up your miles is absolutely ridiculous. I was averaging around 1500 miles a month, and with 4 month still to go before I could renew, meant I would have to pay £43.96 to get out of my minus number of miles then at least a further £525 on top of my monthly payments to get me to the end of my insurance year. Then, I decided to look elsewhere and found a cheaper quote which would benefit me monthly, so I phoned insure the box to cancel my policy to which they told me I had to pay for the rest of the year!! Having no doubt that I would not be paying the extra for the top up miles I took the hit and paid the cancellation and went elsewhere. I would not recommend insure the box to anyone.