My health insurer has just notified me, in a brief form letter, that my monthly premiums are to rise from $472.33 to $857.00 on January 1st. That’s an increase of 81 percent. ***E*I*G*H*T*Y*-*O*N*E* *P*E*R*C*E*N*T*** Can they do that? I called them. They sound pretty confident they can. Ye gods!