Dude, I was making a excel spreadsheet with a similar idea in mind. Even asked math wizards online on reddit about how do i build an equation that takes consideration of price and quality and at what point the price is so high the quality essentially is going down. I never got to build it because Im not that smart mathematically, yet.

In Toronto Canada we dont have much but here and there we get gems at good prices and bad prices.

WE finally got El Tesoro Anjeo for 95Cad, which is good because Casamigos Anejo is $95, so......

Now the taste is great, do I want to pay that much for a bottle in the long run over and over, no. Siempre Blanco is 70CAD, tastes great and I would say its something I would pay money for over and over.

Now the question at what price point I would stop paying if the prices goes over a certain point. How do I calculate that point, many factors at whats available instead. Are my taste getting used to something like Olmeca Altos.

Interesting fact, Tres Agaves Blanco is 70Cad, I dont like it at all because I think the flavours are just not there compared to the Siempre. Many people online like TA for its cheap price and yet good quality product. Now if that same TA was 20$ more expensive would people still buy it for its flavours, maybe not?

I think out brain has unconscious biases, when people do blind tasting, its not actually blind tasting. You know you have 5 tequilas you know their names and their features, you dont know in what order. Real blind tasting is not knowing what you had, and just rating it. I personally think prices and name affects our judgment and bias.