I'll try to answer here.

Any PVPer who doesn't use potions is insane. Of course we use them. Going through 10 an hour is quite common. You're not going to burn through them at the same rate as a PVE trial but that's mostly because you can spend a large portion of each hour on your mount traveling, or in sneak waiting.

Also, every person is different so I can't say which exact potion is best, but the most popular are ...

Health-Health Rec, Mag- Mag Rec, Stam- Stam Rec Pots

Immovable Pots

Invisibilty Pots

Spell and Weapon Power Pots

Many of these require Columbine or Namiras Rot, the two most expensive ingredients. Oh XBox they go for 700 to 1000 each. Combine them with 2 other ingredients generally costing 500 each, and it's safe to say that 4 potions cost at most 2000 gold to make. The break even on selling 10 of these is above 5000 due to listing fees. Also, while easily findable Lorkan's Tears aren't exactly free. Almost free yes, but you still have to know where to find them.

Let's assume for a second that you're smart enough to buy in bulk so it only costs you, say, 1000 gold for 4 potions. You could then turn a profit selling them 3000 or 4000 for 10. This is a much more sellable price on console.

You're not selling any consumable for 100,000 gold. It's gone in 45 seconds. Even if it was something that made you the equivalent of the Emperor who is gonna drop 100k for that 45 second experience? Even though the forums makes ESO sound like everyone has millions of gold, I'd wager that 90% of the player base has never even seen 100k gold, let alone be willing to drop it on a 45 second consumable.

Maybe your theory would hold some weight if you dropped a 0 off of your proposed price.

I'm against that too, maybe it is pointless to have such theories. The point is, that ZOS is making the worse variation of all available variations, so when I'm depressed from that I tend to think about this.

100.000 was for something unique as that horse. I don't know for how much it would be possible to sell it.
But lets say it would be profitable if you could sell a potion from those crown crates. I'm not sure if I would buy any of those crates anyway, but I would buy a cosmetic at traders if it would be possible to trade it. And if the potions would be lets say the same quality as crafted, it would make a lot of money to the sellers, so I think cosmetic would go down with their prices, but potions? Maybe a lot of trash potions from those boxes would make them actually cheaper at guild traders?

At first it seems like only the players can profit from that, but ZOS would profit from having some good reason behind buying those crates by players, who don't mind spending crowns on lucky unique horse drop, and they could sell the rest.

Maybe it wouldn't work - it is just a theory, but nobody said why it wouldn't work.

And this is why I loved Guild Wars 2 before I realised I would have to be OK with 20 secs stunlocks:
https://wiki.guildwars2.com/wiki/Potion (the first part)

Yes, but what would they achieve by doing that? I mean what is the worst scenario?

I realised, that question is if crafted potions are meant to be for high price - when you compare them to other crafted gear - is it more expensive or less? And how much it would lower the prices, maybe not too much.

Also I realised, that my meaningful potion would be actually the best for PvP, because you could hide that way before gankers:

They would say - what is that glowing blue toad at the road? They wouldn't recognize a player for sure! So PVE players could safely roam Cyrodiil!

EDIT:
sorry I shouldn't be joking about this serious situation.

Edit2:
And I will not say how to make it working anymore. Let them fail horribly - that is what they do deserve for letting this fall upon their community!