I think that the local Go-ride races are good value in that it normally includes an off-road time trial, a skills course and a handicap race, all for about a fiver.
However, I was staggered at the level of cheating. 🙁 The girl who won the final race was pushed up all the hills by the marshall (the only child who was aided). The races were taken seriously with a podium presentation and some decent prizes (musettes, mitts etc). Thankfully, my son enjoyed it as a bit of fun and thought the cheats a bit sad.
The childrens races before the Gorrick 12:12 were also a reasonable price, were great fun and free from obvious cheating. 😀