John Wesley on Acts 19:19

Curious arts - Magical arts, to which that soft appellation was given by those who practised them. Ephesus was peculiarly famous for these. And as these practices were of so much reputation there, it is no wonder the books which taught them should bear a great price. Bringing their books together - As it were by common consent, burnt them - Which was far better than selling them, even though the money had been given to the poor. Fifty thousand pieces of silver - If these pieces of silver be taken for Jewish shekels, the sum will amount to six thousand two hundred and fifty pounds.