There are a couple of new indices out there.

[1] "Silicon Index". Built against pricing observations, including listed prices and transaction data.

[2] "Ornn Compute Price Index (OCPI)". Claiming to use only executed transactions.

Your mileage may vary, but I find these new indices to be quite compelling.

[1] https://www.silicondata.com/products/silicon-index

[2] https://data.ornn.com/

And yup, its not just how much these resources cost, but how much people are willing to pay for them.

(edit: formatting)