There are some brands of bicycles that can cost more than the down payment on a car. Why? Surely making a bike lightweight and reliable isn’t so difficult that it warrants that price? Is it just the brand name or maybe it has to do with customization options?
The amount you spend also scales with how much you want to use the device, and the quality. It’s similar with power tools.
£100 combi drill? For the average DIY user, exactly the same functionality as a £500 one.
For a tradesman using it 7 hours a day, 240 days a year, the more comfortable/reliable one may well pay for itself.