Edgartown at any price is a bargain compared to friendly Amity. The white wooden houses of the Vineyard are kept just as neatly as those of Jaws’ picturesque resort; the waters are no less beautiful around the Island; even the inhabitants are similar. But somehow Richard D. Zanuck and David Brown, the producers of Jaws, are running through about $30,000 a day in their imaginary town, rain or shine, film or no film. Last week they paused in their spree to explain that they didn’t even consider themselves big spenders.

One thing that a shark must do is to be constantly on the move, or else it is in trouble — and Jaws, the shark film in the making on the Vineyard, appears to have this characteristic in common with its subject.

The movie production of Jaws continues to roam the Island in much the same manner as a touring medicine show, playing in each of the Island’s towns.

Pennant-bedecked and fresh paint, the Steamship Authority’s newest ($3.8 million) and biggest ferryboat (230 feet, 1,000 passengers, 494 net tons of freight), the motor vessel Nantucket, docked Wednesday at the Oak Bluffs wharf for public inspection. The Regional High School band and hundreds of cheering spectators had welcomed her to Woods Hole at the end of her 871-mile voyage from her Jacksonville, Fla., shipyard birthplace. She goes into service from the mainland to Oak Bluffs and Nantucket today.

The first day on the set we were extras. On the second day we were promoted to atmosphere people. The money is the same and the duties hardly ever vary: stand and wait; work and wait; relax and wait.

Bill O’Gorman soon learned the facts of life. “Ready for shooting in half a minute really means half an hour,” he says, and he is seldom wrong.

The organized madness which has been afloat and ashore continued throughout the week as the plot unfolded in Jaws. There’s a contagiousness to the mood of the opus, and Islanders steadily stopped by to spectate when the filming was on the Norton and Easterbrooks’ dock and peered anxiously seaward when it was not.

The filming of the movie Jaws began that morning on South Beach, and suddenly the parking lot at the end of Katama Road looked like lower Fifth avenue — trucks galore, even a bus. Some had been rented, but others belonging to Universal Studios had traveled the 3,000 miles from Pacific to Atlantic.

At Katama, shooting started yesterday on Jaws. Around the Universal Studios offices the day before, one wouldn’t have believed it was going to happen.

For a nerve-tattering 24 hours this week, Universal Studios’ production on Martha’s Vineyard of the smash-to-be film Jaws was a suspense story that no audience will ever see.

The $3 1/2-million project had run afoul of the law — the production crew had not gotten permission to do a batch of things it was doing.

And permission-getting, which involves formal public notice (see legal advertisements, Page Two), hearings, and mature deliberation, can be agonizingly long. Production costs are budgeted at $30,000 a day.