I found it in game: “cercatore d’oro” means “gold digger” or “Goldgräber”, and it is a separate package (without worker),
not the golden package (without digger in the name, at least in german). I haven’t seen the name in english though,
maybe they chose the same name for both types of this package?
Nonetheless: it is not fixed in price, because depending on how many workers you have, the price differs. E.g. my next
worker would cost 6000 gems. At a 75% discount this would be 1500 gems. The gold digger package is cheaper (only
full chamber), so i’d expect to only get the gold digger package (without worker), when i’m low on gems.
As the starter package is cheaper, i’d always go for the starter package for a fixed 500 gems. For that you have to be
somewhere between 0 - 200 gems (exact values are unknown). Keep in mind, that Flare doesn’t communicate any
details about packages. Maybe you can only get the golden package including the worker, when you have less than
e.g. five workers? Only Flare knows