So canon question, do we know anything about commercial space flight? When Revy wants to go to Earth with her shiny new IFVs, presumably she would make use of such transportation, but I know nothing about the size of the ships, the price of travel, and the amount of protection such a ship has. I can of course just pull stuff out of my ass (probably based on B5 where we have quite a bit of information), but I prefer sticking to canon.
My bet is that it will be rather expensive.
Going by the blurb in the Codex:
A mass effect drive core decreases the mass of a bubble of space-time around a ship. This gives the ship the potential to move quickly, but does not apply any motive power. Ships use their sublight thrusters for motive power in
FTL. There are several varieties of thruster, varying in performance versus economy. All ships are equipped with arrays of hydrogen-oxygen reaction control thrusters for maneuvering.
Ion drives electrically accelerate charged particles as a reaction mass. They are extremely efficient, but produce negligible thrust. They are mainly used for automated cargo barges.
The primary commercial engine is a "fusion torch", which vents the plasma of a ship's power plant. Fusion torches offer powerful acceleration at the cost of difficult heat management. Torch fuel is fairly cheap:
helium-3 skimmed from gas giants and deuterium extracted from seawater or cometary bodies. Propellant is hydrogen, likewise skimmed from gas giants.
Things like the IFVs would normally be shipped on a cargo barge, which I imagine to be a Space!Freight-ship.
I'm picturing something 500m long, 100m wide and 100m high. With basically nothing but absolute minimum kinetic barriers, smallest Eezo core they could manage and a set of ion engines.
Great thing about Mass Effect is that the ship's invulnerable while flying. It's going FTL so no one can detect it until it's long gone. The only vulnerability would be when it drops out of FTL to use a Relay.
So Corporations would have very specific schedules so that just before the barge arrives they can deploy company ships to defend it for the short time it's there.
The problem is that since Revy wants to ride with her IFVs she can't send them that way. Instead she's got to pay to basically have them shipped express.
We've seen several manned freighter ships and frankly they were rather small. I'd have to boot up ME to have a look but my guess is we're looking at a cargo hold 10x10x5 meters in size. Big enough to fit a couple Tigers and that's about it.
So given that my bet is they'd be charging Revy the equvilant to using up the entire ships cargo capacity.
The issue of course is that those freighters didn't really have room for passangers. There was the cockpit, the crew's living quarters and the cargo hold. So odds are Revy would have to either crash with the Crew or sleep in the Tiger.
Speaking of sleep; Mindoir is IIRC one of the outer colonies of the Alliance right now. I think it took the Alliance six hours to get there but I can't figure out where I got that number from. Assuming it's right I figure that on a slower cargo ship traveling to Earth we'd be looking at a day or two's travel.
I honestly can't think of anything commercial that would carry both passengers, especially first class ones, and something as large and heavy as an IFV.
Besides while it might cut out the chance for social stuff I can totally picture Revy "Wait, what do you mean I don't act rich?" Shepard sleeping in the back of one of her Tigers on the trip to Earth.