As far as I can Google the colossus data centers did cost about 7-10 and 18 B respectively.
Renting them out in part at 1.25 B pr month sounds like a very good deal for spacex.
Opex and debt service will eat that cash flow.
We all know very little of that is gonna materialize long term.
Reality is that this is all to show some more (theorical) revenue and will be scrapped 6 months from now.