The
$1 used in many Starbucks locations works at 120 volts & 15 amps or 1.8 kiloWatts. Each blend takes 10 seconds (I think?) which gives us 0.3 kWh of energy every usage.
Hawaii
$1 the US with an absurd average residential price of electricity of ¢34.3 per kWh. That's 0.083 cents every use.
Maybe maintenance costs are the justification? Vitamix
$1 less than 2% of their products under warranty last less than 10 years. The $1,199 blender cost divided up by, idk, 5 uses a day for that time doesn't even break 7 cents per blend.
Labor costs? Store managers in New York
$1 earn $52,808 yearly salary, which, assuming a 40 hour week, is $26.40 an hour and 7.3 cents per ten second blending.
These absurdly generous estimates tell us that blending a drink costs no more than 14 cents. Every blend modification is more than 36 free cents in our owner's pockets. That may not sound like a lot but even just selling one per store (of which there are
$1!) nets them over a million bucks. Every time.