I won't even start the van for less than £40, with all the costs involved in running a business it's just not worth it. Doing services for £30 just about sums up the state the industry is in right now. You can talk about the need to survive, mouths to feed etc etc, but at the end of the day I'd rather work in Tesco than service a boiler for £30.00. At least there is no possibility of life in prison if you stack the shelves wrong.
Common sense tells you that if you charge £29.99 for a service, then eventually someone is going to charge £25.99, then someone else £19.99 etc etc etc until maybe in a few years time we will be paying the customer to service there boiler. Eventually people will realise that training costs, business running costs far outweigh the salary that can actually be made. Then less people will apply to be gas engineers and some other fad will come along full of promise and pots of gold.
Suddenly there will be a shortage of engineers, so prices will rise and the whole game will start over again and I will no doubt be typing the same nonsense about the same subject in ten years time.