What was the value of 30 pieces of silver?

$19.20, about 113 days' wages of the common laborer at .17 cents a day.

Obviously, you couldn't hire a laborer today for that much, so what would today's value work out to be? If you wanted to hire a worker, you could pay him from $100 to $125 per day in the US. So, using a day's labor as the means of comparison, it would work out to be $11,300 to $14,125 US. This could buy a nice chunk of land in most states, just like the 30 pieces of silver bought the potter's field in Matthew 27:6-10.