$150 for five minutes
The sad reality is that many service providers will take advantage of a customer’s ignorance. If you call a construction man to visit your home, odds are you don’t know how to fix something. So, as a professional who provides professional services, they’ll offer you an inflated quote for their time.
For instance, if your windows or sliding doors don’t open as smoothly as they used to, they’ll use some dish soap to get it working right again. The cost of this DIY fix, according to the OP, is $150 for just five minutes of their time. You could’ve done it yourself, but because you called a pro, you need to pay a premium fee. What a rip-off!