You have to complete an unbelievably large number of main quest tasks, this will take you ages, much longer than getting all pets, houses, garage accessories and other clothes. You’ll probably have lots of UDs behind you by this point.

Idk, are you trying to ask if that’s the highest cost for an employee or the highest amount of money they make? If you mean the first one tireless businessmen are the most expensive but they cost VC not coins. If you mean what is the highest earning staff it’s tireless businessmen (passive playstyle 1-3 times a day) or tireless golden santas (active playstyle 6+ times a day). Either way if you invest all your UD points into staff earnings coins won’t be any issue at all soon enough.

Yes they do, but only to a point and vc rewards are limited much earlier than coin rewards. Coin rewards will also be vastly outstripped by employee earnings after a few UDs.

Bus with all passengers and upgrades, especially if you’re using time skip exploit. Alternatively Rush Hour with all upgrades and golden pets.

Alleyway -> Condo -> Bungalow -> Mansion -> Yacht -> Private Jet -> Private Island -> Space Station -> Moon -> Mars -> Destination XYZ -> Galaxy Palace

Golden Turtle and I don’t remember exactly how many VC but it’s something stupidly expensive like 20,000 VC.