Even if you are not mechanically minded, you can save some money by learning how to do the basic maintenance yourself - change spark plugs, swap air-filters, replace bulbs and so on. Anything that you don't need special equipment and can be done after watching a YouTube video.
This applies to so many things - replacing a dishwasher? Furnace making a noise? Learn how they work and how to do it and you realize it often isn't that difficult at all and you can turn a $300-400 charge into a $15 part and 10 minutes of effort.
Again, do all the low-hanging fruit yourself, the easy stuff - only pay for an expert when you actually need one.