That’s sort of what I thought about the quality of the commercial grind, which was visibly much finer than anything I could produce at at home (as you say).
But take the point about dialling in and ageing... Oh well, may have to start saving the pennies!
It's more of a consistency benefit over absolute particle size. The grinds that come out of an entry-level machine will have a much greater variation in particle size, whereas a higher quality machine will give you a more consistent particle size.
That’s sort of what I thought about the quality of the commercial grind, which was visibly much finer than anything I could produce at at home (as you say).
But take the point about dialling in and ageing... Oh well, may have to start saving the pennies!