The member world engineer units have this cost clearly provided, and we know they come with their own ships. The Starfleet Engineers team, again, I quote:
"Starfleet Engineering Command (5pt from Starfleet, to deploy will require 2 cargo ships and 2 freighters to be sourced from member worlds)"
So does that mean "we pay five points, we get engineers that we can deploy?" Or does that mean "we pay five points, we get engineers with no spaceships, and have to separately pay for the ships?" In the latter case, the ships cost an extra ten points.
This is not a concern I made up, and if "the costs are already clear" to you then I would love to see you explain what obvious piece of logic fits it all together for you.
Seems pretty clear to me. We need to source those auxiliaries separately. Otherwise why would it be noted like that at all?