A Baratza Encore burr grinder retails new for $170, but you can get one in great shape on eBay for $50-70: https://www.ebay.com/itm/325267513385

I can't even fathom what you'd get for $675. What does it do?

If you want to make espresso the type of grinder is important for the quality of the coffee. More important than the espresso machine. You want a disc grinder, and they are more expensive than cone grinders.

For filter / french press / aeropress it doesn't matter as much and you can use any cheap grinder.

Your prices are starting to make more sense. Wild stab here, but I don't think most people read "decent coffee equipment" and thought, "espresso machine at a minimum"

I agree with you, and I'd like to add that parents prices are high even for espresso machines. You can get a decent espresso machine + grinder for under 1000€.

You can look up the Niche Zero.

You gotta be trolling. This is definitely a caricature of some of the worst commenters on hn.

How good do you need to grind to justify $675 to crush your beans?