There is no bullet-proof way of measuring the cost of garage door repairs. Most of it is based on how the maintenance process goes and the type of contractor that has been used. However, there are some fairly straightforward things that are drivers of costs. First of all the brands and types of accessories that are used can affect the overall charges.
Premium products costs money but they are worth a lot more, not least because they last for ages. Therefore, the property owner has to make a calculated decision to weigh the initial costs of garage door repair with the long term benefits that are likely to accrue if this work is done. Another thing to consider: when all things are constant, those property owners that summon help during an emergency situation are more likely to pay a higher price, since everything is prioritized as being of critical importance.