Like I said, not worth much. I didn't say they're utterly worthless. That's why killing them by the hundreds and thousands is far more useful than one at a time.

[They overvalue themselves. She knows what they're worth. Approximately six thousand gold each for the average soul, give or take depending on the specifics of the currency and the value of the individual. Souls themselves do well as currency once one has enough stored up, unless consuming them seems viable. It's always nice to have options.]