what would 30 pieces of silver be worth today
Between $185 and $216 .
Thirty pieces of silver
At spot valuation of $17.06/oz (the closing price on Monday, December 12, 2016), 30 "pieces of silver" would be worth between $185 and $216 in present-day value (USD).
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Thirty pieces of silver [SEP] Types of coin
The word used in Matthew 26:15 (ἀργύρια, "argyria") simply means "silver coins," and scholars disagree on the type of coins that would have been used. Donald Wiseman suggests two possibilities. They could have been tetradrachms of Tyre, usually referred to as Tyrian shekels (14 grams of 94% silver), or staters from Antioch (15 grams of 75% silver), which bore the head of Augustus. Alternatively, they could have been Ptolemaic tetradrachms (13.5 ± 1 g of 25% silver). There are 31.1035 grams per troy ounce. At spot valuation of $17.06/oz (the closing price on Monday, December 12, 2016), 30 "pieces of silver" would be worth between $185 and $216 in present-day value (USD).