NescienceEscape's page

It works better if you interpret that number as 'magical things available' not 'mundane thing purchased on a regular basis'. Your average purchase in town is not going to be magic items, and in any case is going to be well below that limit but things up to that limit are available should someone look for them. There may be potions of 1st level spells available, but that does not mean that people are buying them every day.

I don't know of any guidelines other than common DM sense. I also expand on the 75% general chance of something being available. Some things are more common than others, and a settlement will likely not have vast amounts of things in the price range. Just because a town has some potions of CLW doesn't mean they have hundreds. A town is more likely to have a scroll of CMW than Chill Touch despite Chill Touch being lower level.

My main question is what Lifestyle (Cost of Living) is available in each type of settlement?

I get what you are saying here and it is helpful, but for now I want to nail down this particular aspect of settlements/size/availability.

Theoretically, I can see an argument for every lifestyle being available in every size settlement - super-rich enclaves are a thing...

But for a more typical settlement, I would expect that Extravagant and even Wealthy would not be available at any Village or smaller settlement.

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Any actual guidelines that match up Cost of Living with Settlement size?

I tried using the Settlement Statistics, Base Value of purchasable items, but it gives 200gp for even a Hamlet, which is 2x the Wealthy Cost of Living. That seems very non-typical to me.