IntroIntro

Starting October 2025, I began to track some of the items we buy at least a semi-regularly with sats.
The idea is to visualize inflation in sats over time.
This is the 2nd post of what hopefully turns into a regular series to document how costs change over time for some of the things we buy with sats. (The previous post is here)

Background, LimitationsBackground, Limitations

We've been spending & replacing for a while now. While we could feel things getting cheaper in sats over time, we never put in the effort to actually track and measure it for specific items. This is what these posts are about.

We spend a a few months of each year in South Africa where we can buy heaps of stuff with bitcoin. So I fully expect to have months without any useful data for the times when we are in other places where we just don't have as many options to buy things directly with sats.

The Numbers, NaoThe Numbers, Nao

Units: Electricity in kWh, water in kilo liters, phone data in Gb, fuel and milk in liters.
*We didn't buy water & electricity in November, so the change in December is relative to October.

Milk and mobile data has seen a relatively sharp increase when priced in sats.
Electricity also cost significantly more sats compared to October, our last reference point.

Comparatively, Water only cost a little bit more than October. I think that is mainly because there is a fixed monthly fee included and the reference number, our October bill, included a few more months of fixed fees.
I'll crunch some numbers to see if it is worth it to track and exclude the fixed portion. Although I suspect it won't make much of a difference to the general trend over time.

SummarySummary

Seeing sats inflation across the board isn't terribly surprising since the goods are priced in fiat, and bitcoin cost fewer shitcoins in December than it did for much of November.

And much the same as in the last post, it should be more real to see that it can also move against you in the short-term. We still expect to experience deflation over the long-term.

Since we always replace more than what we spend, the sats we spent in December 2025 had been replaced in August 2023.
Contrast that with the theoretical scenario of keeping those fiat shitcoins on hand since then to finally spend now. Storing our purchasing power in sats certainly paid off despite the short term sats-price inflation.

Questions welcomeQuestions welcome

Shoot any question if anything isn't clear. I'm happy to provide more info.