The Frictionite 00 and the Super Punjab used the same type & grade of abrasive. That abrasive is no longer available.

The Barber hones are intended as a touch up/maintainence hone. JimmyHad described their use correctly. I will add that I have my grandfathers Frictionite 00 and it is the only hone he owned. No other razor grade finishing stones.

The current high prices are due to the scarcity and excellent reputation. They are simply no longer being made because the abrasive is now not available. The laws of supply & demand are now in effect.

Are they better than other razor finishing grade stones/hones? That really depends on your personal preference.