The lefty garbage was correct by your numbers and Claude's, you just don't know how to multiply apparently.
The actual figures on Alligator Alcatraz:
A CBS News Miami financial analysis after the facility's shutdown found the total cost came to $3,571 a day per detainee, with a former acting ICE director under Obama calling it "a shocking number" and "an absolutely astounding bed rate." The total cost for the facility was estimated at $1.2 billion.
CBS NewsCBS News
Annualized, $3,571/day works out to roughly
$1.3 million per detainee per year — so Schlosser's "$1 million" figure is close to, if anything a slight understatement of, what investigative reporting found.
Separately, leaked FEMA/state documents showed the state was spending over $1 million per day to run the facility at points, and state officials themselves estimated costs of $411 per bed per day — compared to standard ICE detention centers, which averaged $157.20 per bed per day.
The Tributaryyahoo
Why it was so expensive: the facility's remote Everglades location meant all supplies had to be trucked in, including food, water, and generators for electricity — plus large fixed contracts (temporary tents, portable toilets, staffing) spread over a fluctuating and often much-lower-than-capacity detainee population, which drives the per-detainee cost way up compared to a permanent facility running near capacity.
yahoo
So: the $1M/detainee/year figure doesn't apply to ICE detention generally (that's closer to $50–75k/year), but it's a solidly sourced number specifically for Alligator Alcatraz, backed by CBS's post-closure financial analysis.