30 pieces of silver.... Hmmmm. Adjusted for inflation, not far off Napolean’s after tax offer. Some things do stand the test of time!
So 30 pieces are about 5 weeks money (based on a 6 day working week.) In terms of purchasing power, each silver piece was probably worth about $20. The standards of living being much, much lower than in modern (Western) societies. So the thirty pieces are worth about $600.