[ukoki]

You've perfectly described one half of what makes me uneasy about "boots theory" which is the added risk of making fewer, larger purchases. The other half is that I find that often the more expensive choice does not have as much quality as needed. Boots theory depends on finding product choices where quality (ie durability, ie expected lifetime) increases faster than price. But my personal experience is that quality increases slower than price. I worry that most boots that cost say 5x the baseline budget boot might have less than 5x the "quality" and therefore expected lifetime. I'd guess my last boots were 5x price, 3x quality, so buying them cost me 2x the cost of the budget boot in terms of lost lifetime value. Finding that boot that has >5x quality is difficult and requires all sorts of extra work working out what reviews to trust etc, and risky because if you make a mistake you could be out of pocket for many multiples of the budget choice cost.

Boots theory is attractive because it's pretty obvious that more expensive products are nearly always better quality. But what actually matters is whether the increase in quality is greater than the increase in price, which I think is much less obvious.

[Tijdreiziger]

I have heard the advice to ‘buy twice’. The first time you buy a tool (e.g. boots), you’re really just trying it out, so buy a reasonably priced type. If you end up using the tool so often that you want a better one, then go ahead and buy the best type you can afford.

[lbriner]

Yes, I was told the same. Lots of us have bought e.g. expensive power tools or electronics gadgets that we have hardly ever used!

[wpietri]

It makes more sense if you look at it from the manufacturer/seller perspective. When customers are extremely price sensitive, what do you cut from your product?

There are plenty of answers to the question. But one approach is to make sure it looks as good and works as well for the return period, but doesn't last as long. E.g., you use less material, short the structure in favor of the surface, use lower-quality material, invest less in production quality, or offer shorter warranties.

For example, think of a raincoat. On one end of the spectrum we have the $0.99 disposable poncho, which is basically a garbage bag with a different cut. Up from there are all sorts of methods of improvement: https://www.rei.com/learn/expert-advice/rainwear.html

The better raincoats tend to be correlated with price because if a feature doesn't require additional expense, low-end manufacturers will just add it. And also because while many consumers aren't discerning about quality, many are, and will pay extra for it. Places like Wirecutter and Consumer Reports do the sort of testing that helps keep people honest.

That said, you're very right that there are many other things that influence price. A Burberry raincoat will be 10x the price of REI's favorite raincoats, but it won't last 10x as long. So Boots Theory, which is about good pairs of boots being more expensive than shoddy ones, is correct. But you can't work it the other way and claim that expensive things are always good in the way a night watchman thinks about his work boots.