What a crass comment to make on this forum, particularly just after such an excellent post by ChrisR. No surprise that simond agreed with it. Haven't you noticed the value of the vast body of information given free on this forum?Softus said:something you don't pay for often isn't worth very much.
To get back to the question of charging for repairs, it has to be based on the old maxim that time is money, but you can use your discretion to take account of how efficiently you are performing. For example by charging more for already having the spare part in the van, or charging less when you spend longer than you should due to errors of judgement or inexperience.
The important thing is to treat the customer as your partner in the enterprise, rather than as the victim. Discuss what you're doing, or proposing to do, and it's likely cost, with the customer. For example I often give customers the option of collecting a spare part themselves rather than paying me to do it. You may not make so much money in the short term, but you build up mutual trust and a long term business relationship.