User blog comment:PitaKang/Funday Monday 1: How much did Solomon's Temple cost?/@comment-32656-20130417124852

You're inflating the weight of a talent - a "talent" has weighed many different amounts through history, none near the one you quote as far as I know.

The amount was likely inflated as well, of course.

I remember seeing something that said the weight of the talent at that point was also vastly lower than most other areas of the time, as well.

Yes, so many sources mention its existence that it more or less had to have existed. But by this point, we'd never find physical evidence unless they tore up all Jerusalem.