1200 sulphite at depth lvl 50ish will net you easily 40+ fossils and 10-30 raw chaos. The problem is the clickables such as wealth, light boxes, and fossils don't scale with level. So you just stack up on sulphite, run lower delves for HOURS, make insane bank, craft insane items, then go into your red maps to restock sulphite and item bases.
Oh and prime resonators (Yes I found one) drop before even lvl 68 monsters. I found one in a lvl 59 depth. That means that it probably goes by the "at least depth lvl 15" or whatever the fuck rule for most fossils. So yeah, you can efficiently make insane amounts of money and high end craftables with a meager amount of sulphite. Once the new changes go in tonight I'm going to probably spend entire days on my Tomb Raider with one load of sulphite. I just PRAY they add stackable fossils in with this patch or I'm going to have a rough time. I already had to edit out silver 1 socket resonators and I'd edit out the silver 2's, but they're actually the most commonly used for targeted crafting because when you add a 3rd fossil you usually get a "no _____" mod that fucks with what you want.
I was keeping an excel sheet up with my delving, but I stopped updating it after 3 hours and just eyeballed and tallied fossils, but it seems like I can average 40ish fossils per hour and 15 raw chaos no matter the depth.
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