Subject: Re: IV by the stock repurchase method
that Warren appears to be willing to pay somewhat more than 1500x for A-shares than for B-shares.

Isn’t the very point of Berkshire buying back A shares (instead of B shares) to prevent outsiders from accumulating them to potentially gain control? It could still happen as the float of A shares gets smaller and smaller, but there’s no way to prevent that after death of A share holders.