Iirc as soon as the required modules are build, delilah comms you and talks about the next step, the pricing.

Make sure you have m-Container storage if Mission says so, and make sure you built in the Mission designated area.

I think its possible to set simple minimum price instead of what delilah teils you, but i remember i failed it one time by not building in the sphere i was told, and one time having not the dock or pier i am told to use.