I actually don't seem to sell those very often. And, I got plenty of those a while ago when farming for the shrine recipe and orbs. I didn't used to sell acumen very often, either, until recently. I could get by just selling the ones I found in loot. But I think they get used more now to offset the negatives from the other pots. Plus, the aether ones are craft only.
All are craft only. The only potions that can be found as loot are lesser focus, lesser health and lesser restoration.
It's nice to see this though, as opposed to massive amounts of lich skulls on vendors back when everyone was running upper tears. Hopefully just need some minor adjustments to get it on par with the availability of the other potions. They are very powerful though, so i would prefer them a bit scarce as opposed to everyone easily being able to make them for themselves. I think it's better for the economy overall that way. Did upper tears get changed? I remember getting lots of skulls there at some point in time
I think were going to have more players using acumen overall now too with recent changes to water tree especially. Water seems like a very solid build for a mage right now if you're sick of burning things
A while ago. They made the liches way tougher. Probably still good for skulls, but I think even groups of 12 struggle unless they're all really high level.
Probably not, but that seems like a terrible place to farm them, since you'd have to run through the whole place to get a respawn. (Unless the waves respawn on their own? I've never tried it.)
I've never tried farming those rooms so not sure if it would work, but the rooms do reset if you have not killed all the mobs and you lose aggro for some amount of time. Back when I was much weaker I used to have the last room on the second area reset on me sometimes before I found the last fire ellie or faun. So you could kill all but one lich and try to stay far enough away from the last one so it reset.