Some things don't matter very much to me. When my cost per year falls into the single digits, I stop worrying about it.

I bought a 4 oz. bottle of Chain-L lube a couple of years ago, partly because I like the guy who sells it. The way that I use it that bottle will last me for several more years. I suppose that I could have bought a quart of motor oil and a gallon of mineral spirits for about the same amount of money. Had I done that, I'd just have a lot bigger container of home brew chain lube sitting on my work bench.

I also have a tub of Park Poly-lube on my workbench. I don't remember how long I've had it but it's at least 10 years old. I suppose that I could have bought a lot bigger tub of something from WalMart or Auto Zone for about the same amount of money but then I'd just have a bigger container to work around.

There's more to value than cost per ounce.