I am not a fan of Noreve cases.
Yes, Noreve uses premium materials (real leather) and are hand-made, which explains the heavy price-tag.
But the material is pretty much the only good quality.
On the other hand the leather also makes these cases extremely heavy. (They easily weigh 100g+ more then a regular cover.) Because they are hand-made, they don't always fit perfectly. And most of them are missing features, like a sleep-wake funktion, holding magnets, etc.
So sure, if you absolutely must have a real-leather case at any price, then there is not really an alternative. But these are far from beeing "the best" cases, you could buy.