How much money did soul cost?

Excuse me, but I was wondering if you could clarify something for me. The paragraph mentions the term "soul" in relation to a cost, but it's not entirely clear in what context this is being used. Is "soul" being used metaphorically here, or is there a specific cryptocurrency or financial instrument that goes by that name? If it's the latter, I'm curious to know how much this particular asset is currently valued. Can you provide me with more information on this, please?