30 tyrian schekels, at 13,8gr each = 414gr of silver. At an average purity of of 92,5% that's 300$ of today's money. Judas betrayed Jesus for 300 bucks. Worst trade in the history of trades, rightfully so he hung himself.

Phönizien, Tyros, Schekel, Jahr 32 = 95-94 v.Chr., f.vz

Greek Coins Shekel year 32 = 95-94 BC