Nice design, well made, 200 watt motor. Built for the long haul.  For drip, press pot, moka pot it works just fine -- with some simple user technique.  Useful in the kitchen for other food processing tasks.

ANY blade grinder is NOT suitable for espresso!  Blade grinders require some user technique to control grind size.  Oily beans like French or Italian roast will clump in a blade grinder. The cord is really, really short -- 24" I think. This requires an outlet directly at the work site.

OK, this is entirely off the subject, but fly anglers use blade coffee mills for preparing "dubbing" -- animal hair chopped into small pieces and used for forming bodies on tied flies.  Don't use the fly tying mill for food!

Also, blade mills are useful for grinding peppercorns,  chopping herbs,  ginding spices like cinnamon, nutmeg, mincing garlic, shallots. And so a blade mill is a useful tool in the kitchen, and at $20 it's not going to break the bank.

I bought this Krups blade initially for press pot and drip grind. It works just fine -- although grinding takes multiple small doses of beans and some "eyeball" technique to get a consistent grind. "Consistent" grind here means functional for press pot, drip, moka pot -- Blades won't produce "consistent" grinds for espresso.

Technique:

Grind in pulses. Tap the grinder to get the larger "bean chips" exposed to the blades.

Small doses of beans in the grinder. Don't cover the blade with beans. I find it useful to measure beans in a cup and then process the dose in small quantities and dump the grinds into the brewing apparatus.

Sight/sound -- large grinds in the hopper "rattle." The first few pulses produce grinds and large "chips."  As the grinds become suitable for use the chip rattle stops and the grounds become more uniform.

You'll develop a "feel" for the grinder. The grinder won't produce good grinds by itself. It takes an operator paying attention.

The motor (200 watts) on the Krups is smooth, quiet, powerful, solid. Everything about this grinder is solid, well designed.  It's NOT going to grind your espresso shots, but with some user skill will produce sufficiently uniform grinds for drip, press pot, moka pot.  (I don't understand vac pot brewing and so can't comment.)

They're on the shelf. You can take it out of the box and compare it to other blade grinders. The comparisons I checked out where with a Black & Decker, Mr. Coffee, Sunbeam and a few others. Price point runs circa $15 to $20, and they seem perpetually "on sale" marked down from $20 -- $25.

Krups runs $20. One blade grinder has some sort of complex button system for "grind coarseness adjustment."  I don't buy it! The variable on a blade grinder is pulse time and repitition. They take an operator who can watch over the process.

The Krups is solid, well constructed, powerful (200 watt motor).  They're in stock. You can comparison shop, and if you change your mind, most stores will refund your purchase price.