Which precursor tablets are valuable?

ritual tablets with can reroll favours * additional times are worth, they are worth multiple times more if they've also got another good ritual mod like re-rolling favours costs less tribute, right now I think they go for 50-60 div with those two mods.

you can comfortably turn a 10 div investment into at least one of these 60 div tablets if you're willing to sit there clicking chaos orbs over and over but it's boring as fuck, I did it a bit back when they were 80+ divs a piece.

Ritual Tablets are definitely worth some divs. If you check in the shop for each type and sort by cost, you can usually get an idea of what tablets/affixes are sought after.

The first two answers are ritual tablets lol. They asked for info on precursor tablets like the ones you get from towers. I would guess ones with guaranteed rouge exiles or essences? Or maybe good combos of rarity, rare monsters and effectiveness?

The general rule is: Ritual tablets are worth a lot (multiple divs). Delirium tablets are worth more than the rest, but is significantly less valuable than rituals. Irradiated and map boss tablets are worth almost nothing (unless they roll very lucky modifiers).

To min-max profit for all of your tablets:

• Start selling them for 200Ex.
• After a few hours, sell them for 100ex.
• After another few hours, sell them for 50ex.

And so on. You can Ctrl+Right-click items in your inventory to quickly list them for the same price as your previous item.

Edit: Just to set your expectations, 75% of your tablets will not even sell for 1ex. But the 25% of your tablets that are worth something, use the above method to get the most money out of them.