The bigger problem is when you need a new machine fast, the apple store doesn't have anything but the base models in stock. In my org we bought a machine for a new developer who was leaving town, and were forced to buy an 8gb machine because the store didn't have other options (it was going to be a 2 week wait). As you can imagine, the machine sucked for running Docker etc and we had to sell it on facebook marketplace for a loss.