So how does gossip determine prices?

I get the concepts, I'm just wondering if anyone knows what the formulas are?

Since minor gossip fades away over time, and major gossip seems to have a cap (at least it seems to cap out at 100 on the villagers I've brain dumped\*), I'm wondering if I can figure out what trades I'll get if I don't periodically cure my villagers. Are the gossips even the right values to be looking at? I think so, but don't think I've seen any thing confirming.

I was hoping to have a central building where I cured my villagers and then sent them off to permanent homes, but now I'm worried about how much I'll lose out on if I don't have a way to zombify villagers at their final homes.

\* /data get entity @e\[type=villager, limit=1, sort=nearest\]