Whats the Deal with Cursed Items/Weapons?

[Algesander]

Has anyone yet figured out how the cursed items work?

Obviously the are stronger and have less penalties but I noticed that an cursed item is not equal to another cursed item.
Meaning the "Cursed Buff" varies, so you have the same cursed Item/Weapon with different stats.

From my observation I think that my later items were stronger than my earlier items.

As of now I have 3 Theories:

1. The Buff you get from Cursed is Random
2. The Buff gets stronger in later waves
3. The Buff is stronger the more Curse you have (At the moment Of Item Spawn)

I think 3. is more likely because from some Patch Notes it looks like the Buff on Monsters also depends on the amount of Curse you have.

Feel free to share your Ideas or give Intel on your Observations.

[Nirvash]

The hook item that says 20% chance that a locked item will be cursed the next time you visit the store, I noticed once that this effect was applied to an already cursed item. I think it was a pistol that had +2 curse on it, then next time it had +5.

So it seems to be that the amount of curse an individual item has can be variable in itself. So as your total curse level increases, the RNG is rolling higher level curses onto items in the store, thus also becoming inherently stronger.

[Pyrology]

It is definitely one of the latter two. Outside of a single outlier, all of my cursed items obtained later in my last endless run were better than the earlier ones. The only exception was a copy of Cursed Ricochet which had +3 bounces rather than the +2 I was getting later.
The +3 Ricochet was obtained from a chest, while my +2s were gotten by locking them in shop to upgrade with fish hook.

[Bumc]

Pretty sure the bonus is random within certain range and does not depend on how much curse you have right now.
Fish hook might be able to re-roll the cursed item bonuses, haven't tested that one myself.