I cook them often. They spend about 11-12 minutes being cooked.
How I cook them:
S&P to room temp.
HOT sear until browned, flip, add rosemary butter, throw them in a broiler to finish. While resting, make a sauce which I sometimes use now, but usually save for later.
Serve with a Pinot Noir ;)
I have a supplier really close to my house which also houses a lot of other exquisite meat -- elk, venison, ostrich, alligator, wild boar, bear, etc.
The kobe beef is $24/lb. The piece featured in the photos was $43.