De'Longhi's best bean-to-cup espresso machine is so cheap that it makes zero sense to get a separate grinder

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De'Longhi has spoiled us this Prime Day. The De'Longhi Arte Evo, one of the best affordable bean-to-cups and a machine capable of holding its own against Breville, is just $399 right now. This is such a good price for a machine with a built-in grinder.Many espresso machines with a built-in grinder can set you back nearly a grand. The Breville Barista Express is the exception to that rule — its MSRP is $699 and but it's currently discounted to $499 at Amazon for Prime Day.In most cases, grabbing the $399 Arte Evo is actually cheaper than buying a separate espresso machine and one of the best coffee grinders. To prove it, I've selected my competitors: two cheap De'Longhi machines, Breville's cheapest machine, and Baratza's best budget espresso grinder — so let battle commence!The competitorsNow allow me to introduce some of the competitors. We've got the De'Longhi Stilosa ($99 right now), the De'Longhi Dedica Duo ($199 right now), and the Breville Bambino ($299 right now).The grinder? The Baratza Encore ESP, my favorite beginner-friendly espresso grinder.So, let's break it down.De'Longhi Stilosa, $99: A small, super-cheap machine with a Panarello frother.De'Longhi Dedica Duo, $199: A narrow, pastel machine with a standard steam wand.Breville Bambino, $299: An entry-level yet coffee-snob-approved machine.Baratza Encore ESP, $199: The best budget/mid-range coffee grinder for espresso.Versus the De'Longhi Arte Evo, $399.The math