I do not care to pay for quality and if it is something that I can use to generate a income with.
Let's take your vehicle as an example... You need a reliable mode of transport to get to work.. not something that will fail to start every morning when you have to go to work, so for that reason I will pay more for a more reliable car.
I think when it comes to necessity, one should go for high quality so that you can take the utmost advantage from the item, and you can use it for its purpose to where it suits best. However, there are high quality items that are not that expensive and ultimately luxurious for us. As long as it can be reliable to aid in your job, and productivity won’t be compromised, then there’s no reason to go for the most expensive one. But honestly, one should not go to the cheapest item as well as for sure its sustainability and quality will be at risk.