I suspect if you ring them during the course of this week you might get the day for £50. They're good for doing that apparently. I paid the full whack to guarantee the place and compared to normal its cheap anyway. If its your first time, this might be the ideal track, small so the speeds aren't manic and not many people know of it so it'll probably be quiet (until a load of Milles turn up). Like you say, go at your own pace. I'm not one of the quick guys and love it!