Daily life · Observed public data
Whole milk, 1/2 gallon
US city average retail benchmark, tracked monthly in USD, BTC and sats.
Indexed to 100 in 2018. Lower means cheaper in that unit.
In dollars
up 43%
$2.96 then, $4.23 now
In bitcoin
down 69%
21,991 sats then, 6,739 sats now
In dollars, Whole milk, 1/2 gallon is up 43% since 2018. In bitcoin, the same purchase is down 69%. The dollar price rose while the bitcoin price fell. That is the measuring stick moving faster than the thing being measured.
Method and source
Source: BLS Average Price Data. Each monthly average price is paired with the stored bitcoin close on the first day of that month, then both series are indexed to 100 at the first observation. Reference rates, not executable prices.